I need help with the fill in blanks

Answer:

21. J.
22. G.
23. K.
24. L.
25. B.
26. F.
27. H.
28. D.
29. A.
30. I.
31. C.
32. E.

Explanation:

Answer:

DNA Synthesis

There are four basic components required to initiate and propagate DNA synthesis mechanism  . These are: substrates, template, primer and enzymes.

Explanation:

Template DNA

enzyme - DNA polymerase, Helicase, DNA primase,  topoisomerases ,

DNA ligase

Okazaki fragments

Single-stranded binding proteins

DNA POLYMERASE

Populations in Hardy-Weinberg equilibrium express the same allelic and genotypic frequencies through generations. Number of individuals expressing each phenotype: 63 sheep S^AS^A, 84 sheep S^AS^B, 28 sheep S^BS^B.

The Hardy-Weinberg equilibrium theory states that allelic and genotypic frequencies in populations that is in equilibrium remain the same through generations. No evolutive forces are acting on these populations, so no evolution occurs.

Assuming a diallelic gene,

Allelic frequencies

Genotypic frequencies

The addition of the allelic frequencies equals 1

p + q = 1.

The sum of genotypic frequencies equals 1

p² + 2pq + q² = 1

In the exposed example,

Alleles          Frequencies

Genotypes

We need to get the number of animals expressing each genotype and phenotype. To do it, we just need to use allelic frequencies and calculate  genotypic frequencies (p², 2pq, and q²), and then multiply these values by the total number of animals (N = 175).

Genotypic and Phenotypic frequencies

F(S^AS^A) = p² = 0.6² = 0.36

F(S^AS^B) = 2pq = 2 x 0.6 x 0.4 = 0.48

F(S^BS^B) = q² = 0.4² = 0.16

Number of individuals expressing each phenotype

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Complete question

A single gene with two alleles control variation in haemoglobin type in sheep. There are three different phenotypes corresponding to genotypes

In a flock of 175 sheep the frequency of allele S^A was found to be 0.6 and frequency of allele S^B WAS found to be 0.4.

Using the hardy weinberg equation calculate the number of sheep with each phenotypes in the flock show your working

Answer: C. One or more nucleotides are added to a sequence.

Explanation: An insertion mutation affects DNA by inserting one or more nucleotides into the DNA sequence.

The correct combination of vital signs is temperature, respiratory rate, and heart rate.

Vital signs are key measurements that provide important indicators of a person's physiological status and overall health. They help healthcare professionals assess and monitor a patient's condition. The vital signs typically include temperature, respiratory rate, heart rate, and blood pressure. Among the options provided, the correct combination of vital signs is temperature, respiratory rate, and heart rate.

Temperature is a measure of the body's internal heat. It can be measured orally, rectally, or with the help of infrared thermometers. Deviations from the normal range may indicate fever or hypothermia, which can be indicative of underlying health issues.

The respiratory rate refers to the number of breaths a person takes per minute. It provides insight into lung function and overall respiratory health. Abnormal respiratory rates may suggest respiratory distress or underlying pulmonary conditions.

Heart rate, also known as pulse rate, measures the number of times the heart beats per minute. It reflects cardiac activity and can be assessed by feeling the pulse at various points in the body. Deviations from the normal heart rate can indicate cardiovascular problems or other physiological abnormalities.

Weight, muscle mass, and height are not typically considered vital signs. They are important anthropometric measurements used for assessing overall body composition, growth, and nutritional status. While these measurements are relevant in healthcare, they are not classified as vital signs.

In summary, the vital signs include temperature, respiratory rate, and heart rate. Monitoring these parameters allows healthcare professionals to gain valuable insights into a patient's health status, identify potential issues, and make informed decisions regarding treatment and care.

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The part of the hose reel system that best represents a DNA molecule would be option D: a specific section of the hose.

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Answer:

D. A specific section of the hose

Explanation:

test approved

Answer: virus is exception

Explanation

 virus wall is made up of proteins hence they lack of cell wall therefore it is exception

A solid is held in shape by strong intermolecular forces. Therefore, the correct option is (A).

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The evidence supports the claim that the victim had cocaine in her system.

The evidence suggests that the victim had cocaine in her system. Witnesses reported that the victim seemed disoriented on the day of her death, which is a common effect of cocaine use. Additionally, the marquis test on the saliva turning orange is a positive indication for the presence of cocaine.

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Answer:

The genetic information that is passed from a parent to its offspring is found in our DNA . DNA stands for “deoxyribonucleic acid.”

Explanation:

GENES- a unit of information inside a cell which controls what a living thing will be like. Genes are passed from parents to children

The correct answer is colloid.

A colloid is a mixture that appears to be the same throughout, but when examined under a microscope, it can be seen to be composed of two or more substances. The small droplets of liquid that Maria sees under the magnifying lens are the dispersed phase, and the liquid that surrounds them is the continuous phase.

A solution is a homogeneous mixture, meaning that the substances are evenly distributed throughout the mixture and cannot be seen under a microscope. A suspension is a heterogeneous mixture, meaning that the substances are not evenly distributed throughout the mixture and can be seen under a microscope.

So, the mixture that Maria is examining is a colloid because it appears to be the same throughout, but when examined under a microscope, it can be seen to be composed of two or more substances.

Here is a table that summarizes the different types of mixtures and their properties:

| Type of mixture | Appearance | Visibility of dispersed phase under a microscope |

|---|---|---|

| Solution | Homogeneous | Not visible |

| Suspension | Heterogeneous | Visible |

| Colloid | Homogeneous | Visible under a microscope |

I hope this helps! Let me know if you have any other questions.

Answer:

A

Explanation:

it has to be artificial incubation larger as it generates more hrat and helps the eggs fell safe and warm hope.it helped

Answer:

The statement is false. Unicellular Organisms also respire.

Explanation: Respiration is the process by which an organism intales Oxygen and releases Carbon Dioxide along with energy in the form of ATP(Adenosine TriPhosphate). It is necessary for every organism. Hence Unicellular Organisms ALSO RESPIRE

The results of the experiment indicate that the prediction was accurate and that a negative feedback loop plays an essential role in maintaining homeostasis. The hypothesis stated that if the glucose levels in the blood increase, then insulin levels would also increase, which would lead to a decrease in glucose levels.

The graph shows that this is precisely what happened in the experiment. Glucose levels started at a baseline level, increased after the glucose drink was consumed, and then decreased after insulin was released.

The results of the experiment provide evidence that the body has an efficient way of regulating glucose levels in the blood through the use of a negative feedback loop. It can be concluded that insulin is responsible for this regulation, and without it, blood glucose levels would increase, leading to hyperglycemia. Therefore, insulin is an essential hormone in maintaining homeostasis within the body.

The limitations of the experiment include the small sample size and the use of a healthy individual. It would be beneficial to repeat the experiment with a larger sample size and individuals with varying health conditions to determine if the results are consistent.

To improve the accuracy of the experiment, more controls could be put in place, such as controlling the participants' diets before the experiment to reduce the variability of glucose levels. Additionally, more sensitive equipment could be used to measure glucose and insulin levels to increase the accuracy of the data collected. Finally, conducting the experiment in a more controlled environment could also reduce the impact of external factors on the results.

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Answer:

C. It increases the number of possible chromosome combinations that can occur in offspring.

Explanation:

As a result of independent assortment, the number of possible chromosome combinations that can occur in offspring increases. For example, let's consider just three pairs of homologous chromosomes. If there were no independent assortment, the possible combinations of chromosomes in gametes would be limited to only two options: one gamete with all paternal chromosomes and another gamete with all maternal chromosomes. However, with independent assortment, there are eight possible combinations of chromosomes that can occur in gametes, as each pair can segregate independently.

These different combinations of chromosomes in gametes contribute to increased genetic variation in offspring. When these gametes combine during fertilization, the resulting zygote will have a unique combination of chromosomes from the parents. This increases the potential for new allele combinations and genetic diversity in subsequent generations.

Therefore, the correct answer is C. Independent assortment increases the number of possible chromosome combinations that can occur in offspring, thereby promoting genetic variation.

Answer:

In a population of an asexually reproducing species, the frequency of a trait can provide some insight into its evolutionary history.

Explanation:

The reason for this is that traits with higher frequencies are generally indicative of having had more time to spread through the population. Since asexual reproduction involves the passing down of genetic material without recombination, new traits arise through random mutations and are directly inherited by offspring. Over time, beneficial or advantageous traits have the opportunity to accumulate and become more prevalent within the population.

Given that trait B exists in a majority (60%) of the population compared to trait A (10%), it suggests that trait B has had more time to arise and spread throughout the population. However, it's important to note that without additional information about the specific traits and their evolutionary dynamics, this conclusion is based on the assumption that the traits are selectively neutral or have experienced similar selective pressures.

food safety is a risk based process is true

While cell phones offer convenience and connectivity, it is important to find a balance to ensure they do not negatively impact attention spans, learning, and interactions.

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Answer:

Here are the 8 pieces of evidence for evolution defined:

Homologous structures: Structures that have the same ancestral origin but differ in function, like the bones in a bat wing and human arm. They show common ancestry.

Homologous DNA: DNA sequences that are similar among different species, indicating a shared evolutionary history.

Homologous Embryos (comparative Embryos): Similar embryonic development in different species, suggesting common ancestry.

Analogous Structure: Structures that have similar functions but different origins, like wings of insects and birds. They evolved independently to solve similar problems.

Vestigial Structures: Structures that were functional in ancestral species but have lost function in descendants, like nonfunctional eyes in cavefish or human appendix. They provide evidence of evolutionary change.

Distribution Of Species: The geographic distribution of species often correlates with evolutionary history, reflecting past geographic changes and migrations.

Fossils: Fossil evidence provides a record of ancestors and transitional forms, showing how species have evolved over time.

Real-Time Evolution: Examples of observable and well-documented evolutionary change occurring over short time scales in bacteria, viruses, and other organisms with short generation times.

Break down each concepts:

DNA is usually defined as deoxyribonucleic acid: an extremely long macromolecule that is the main component of chromosomes and is the material that transfers genetic characteristics in all life forms, constructed of two nucleotide strands coiled around each other in ladderlike arrangement with the sidepieces composed of alternating phosphate and deoxyribose units and the rungs composed of the purine and pyrimidine bases adenine, guanine, cytosine, and thymine: the genetic information of DNA is encoded in the sequence of the bases and is transcribed as the strands unwind and replicate.

An embryo is the young of a viviparous animal, especially of a mammal, in the early stages of development within the womb, in humans up to the end of the second month.

Homologous means to have the same alleles or genes in the same order of arrangement.  

Analogous means corresponding in function, but not evolved from corresponding organs, as the wings of a bee and those of a hummingbird.

Vestigial is of, relating to, or of the nature of a mark, trace, or visible evidence of something that is no longer present or in existence.

Species is one of the classes of things included with other classes in a genus.

Fossils are any remains, impression, or trace of a living thing of a former geologic age, as a skeleton, footprint, etc.  

Evolution is the change in the gene pool of a population from generation to generation by such processes as mutation, natural selection, and genetic drift.

(Mutation is a sudden departure from the parent type in one or more heritable characteristics, caused by a change in a gene or a chromosome).

(Natural selection is the process by which forms of life having traits that better enable them to adapt to specific environmental pressures, as predators, changes in climate, or competition for food or mates, will tend to survive and reproduce in greater numbers than others of their kind, thus ensuring the perpetuation of those favorable traits in succeeding generations).

(Genetic drift is random changes in the frequency of alleles in a gene pool usually of small populations).

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Answer:

An acute event such as a heart attack or stroke should be promptly managed.

Sometimes, surgical operations are required to treat CVDs. They include:

coronary artery bypass;

balloon angioplasty (where a small balloon-like device is threaded through an artery to open the blockage);

valve repair and replacement;

heart transplantation; and

artificial heart operations.

Medical devices are required to treat some CVDs. Such devices include pacemakers, prosthetic valves, and patches for closing holes in the heart.The key to cardiovascular disease reduction lies in the inclusion of cardiovascular disease management interventions in universal health coverage packages, although in a high number of countries health systems require significant investment and reorientation to effectively manage CVDs.

Evidence from 18 countries has shown that hypertension programmes can be implemented efficiently and cost-effectively at the primary care level which will ultimately result in reduced coronary heart disease and stroke. Patients with cardiovascular disease should have access to appropriate technology and medication. Basic medicines that should be available include:

aspirin;

beta-blockers;

angiotensin-converting enzyme inhibitors; and

statins.

To determine the types of cell division for both phases depicted in the model, I would need additional information regarding the specific model and phases being referred to. Cell division can refer to two main processes: mitosis and meiosis, each serving different purposes.

Mitosis is a type of cell division that results in the production of two genetically identical daughter cells, each containing the same number of chromosomes as the parent cell. It is involved in growth, tissue repair, and asexual reproduction.

Meiosis, on the other hand, is a specialized form of cell division that occurs in reproductive cells (gametes) and results in the production of four non-identical daughter cells, each containing half the number of chromosomes as the parent cell. Meiosis is crucial for sexual reproduction and the generation of genetic diversity.

The determination of the types of cell division depicted in a model would depend on the context and characteristics of the cells involved, such as their ploidy (chromosome number) and the purpose of division. By considering these factors and examining the specific features of the model, one can identify whether mitosis or meiosis is being represented.

Without further details or specific characteristics of the model and phases, it is not possible to provide a definitive answer regarding the types of cell division.

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Answer:

Explanation:Eye color is a polygenic trait, which means it is determined by multiple genes. However, the two most important genes that determine eye color are OCA2 and HERC2. The OCA2 gene provides instructions for making a protein called P protein, which is involved in the production of melanin, the pigment that gives color to our skin, hair, and eyes. The HERC2 gene regulates the expression of the OCA2 gene.

The amount and type of melanin produced by our body determines our eye color. Brown eyes have more melanin than blue eyes. Blue eyes have less melanin and reflect more light, which makes them appear blue.

Brown eye color is dominant over blue eye color because the OCA2 gene variant associated with brown eyes is more active than the variant associated with blue eyes. This means that if an individual inherits one copy of the brown-eye allele and one copy of the blue-eye allele, they will have brown eyes because the brown-eye allele is dominant.

However, it is possible for two brown-eyed parents to have a blue-eyed child if both parents carry a copy of the recessive blue-eye allele. In this case, there is a 25% chance that their child will inherit two copies of the blue-eye allele and have blue eyes.

In summary, brown eye color is dominant over blue eye color because the OCA2 gene variant associated with brown eyes is more active than the variant associated with blue eyes.

Top 3 Authoritative Reference Publications or Domain Names Used in Answering this Question:

1. National Center for Biotechnology Information (NCBI)

2. Genetics Home Reference

3. ScienceDirect

1) The  flow of blood through the heart begins with deoxygenated blood entering the right atrium. A  blockage occurs in one of the coronary arteries that supply oxygen-rich blood to the heart muscle causes heart attack.

2) The coronary arteries is to supply oxygenated blood to the heart muscle itself.  The deposits  restricts blood flow and decreases the amount of oxygen-rich blood reaching the heart muscle.

3) They are more easily blocked by floating embolisms because they are relatively smaller in diameter compared to other arteries in the body.

Deoxygenated blood enters the right atrium from the body via the superior and inferior vena cava to start the flow of blood through the heart. The tricuspid valve then allows the blood to enter the right ventricle. The pulmonary valve allows it to be pumped from the right ventricle into the pulmonary artery, which then transports it to the lungs for oxygenation.

Blood is given oxygen in the lungs, and carbon dioxide is expelled. The pulmonary veins carry oxygenated blood back to the heart, where it enters the left atrium. After that, it enters the left ventricle through the mitral (or bicuspid) valve. The aorta then distributes the oxygenated blood to the rest of the body by passing it through the aortic valve as the left ventricle contracts.

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Answer:

offspring= Hh and hh

Hh = 50%

hh= 50%

Explanation:

in my answer I used H, but you can use any letter.

hitchhikers thumb is a recessive trait (only homozygous recessive can inherit it), so 1 out of 2 offspring will have the trait. (50% chance)

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