Pigmented eyes (P) are dominant to non-pigmented (p), and dimpled chins (D) are dominant to Non-dimpled chins (d). A pigment-eyed, dimple-chinned man marries a blue-eyed woman without a dimpled chin. Their firstborn child is blue-eyed and has a dimpled chin. What are the possible genotypes of the father
Answer:
PpDD and PpDd
Explanation:
Pigmented eyes (P) are dominant to non-pigmented (p), and dimpled chins (D) are dominant to Non-dimpled chins (d).
The possible genotypes of a pigment-eyed, dimple-chinned person would be PPDD, PpDd, PPDd, PpDD while a blue-eyed person without a dimpled chin would have the genotype ppdd.
The genotype of a blue-eyed, dimpled chin child would be either of ppDd or ppDD, but in this case, the mother is ppdd and as such, the child cannot have two copies of D allele. Hence, the genotype of the child can only be ppDd.
In order for the child to have blue eyes (pp), it means that the father has to have the non-pigmented allele (p). This also means that the father is heterozygous for eye pigmentation (Pp).
Hence, the genotype of the father is now limited to PpDD and PpDd.
which is most likely a source of air pollution?
A.littering
B.CFCs
C. oil spill
D.runoff
Quick this is a timed exam
Answer:
B) CFCs
Explanation:
chlorine in the CFC is very harmful to the ozone layer
Air pollution is the contamination of the air and its surroundings due to air pollutants. Chlorofluorocarbons (CFCs) are most likely a source of air pollution. Thus, option B is correct.
What are Chlorofluorocarbons?Chlorofluorocarbons (CFCs) are nontoxic chemicals that contain chlorine, fluorine, and carbon. They are largely used in the manufacturing of refrigerants, foams, sprays, etc.
Chlorofluorocarbons destroy the protective ozone layer of the earth and affect its ability to shield the harmful UV rays from the sun. Due to their dangerous effect on the ozone, they are banned.
They are emitted and get deposited in the earth's atmosphere causing the greenhouse effect that causes the melting of the ice and increases in the sea level to rise in temperature.
Therefore, chlorofluorocarbons are the source of air pollution.
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A small bird gathers pollen and nectar for food, but at the same time is
aiding in the plant's reproduction by spreading pollen to other flowers it
visits. What does this relationship demonstrate? *
Answer:
Mutualism
Explanation:
In biology, the term symbiosis refers to close and often long-term interactions between organisms that belong to different species. There are three main types of symbiotic relationships:
mutualism - both organisms benefit from their relationshipcommensalism - one organism benefits, while the other doesn't benefit or suffer any harmparasitism - one organism causes harm to the otherIn the given scenario, both the bird and plant benefit from their relationship. The bird gets food, while the plant reproduces more easily. This is why their relationship is an example of mutualism.
If someone gets an electrical shock, you should
not touch the person
turn off the source of electricity
call 998 if the person is unconscious
all of the above
Answer:
all above also why is this even a question shouldn't someone have common sense to not do this
Mendel used more than 28,000 pea plants in his experiments. How did such a large sample size improve the reliability of his results?
A. Using many plants ensured that both males and females were available.
B. Using more plants made the experiments much faster.
C. Using more plants was necessary because some were unable to reproduce.
D. Using many plants gave results that supported his prediction of ratios.
Answer:
D. Using many plants gave results that supported his prediction of ratios.
Explanation:
Using more plants in any experiment, such as this one, will make the results more accurate.
By using more pea plants, Mendel's prediction was more supported by the results. A larger sample size will allow the ratios to be more reliable compared to a smaller sample size.
please help with this!! it’s just fill in the blank and it has the word bank
Answer:
top left: centriole
bottom left: Spindle
Top right: homologous chromosomes
bottom right: crossing over of chromosomes
Explanation:
Question 6
In the lac operon, lacZ would be expressed if glucose and lactose levels are both high,
True
False
Answer:
Poyo
Explanation:
true
Can someone pleaseeeee helpppp!!!!!!
Answer:
True someone with type o receives o each from a parent
Can water hurt an organism?
Explaing why not or how it can
Answer:
Yes, it can hurt one depending on the species, such as land animals having to be in the water for too long, it may drown, but it takes a certain amount of time to do so which means that for the most part, it is harmless.
Hope this helps!
According to the cell theory, which describes cells? All organisms are composed of multiple cells. All cells haveAccording to the cell theory, which describes cells?
All organisms are composed of multiple cells.
All cells have the same structure and function.
Cells are found in everything on Earth.
All living cells come from other living cells. the same structure and function. Cells are found in everything on Earth. All living cells come from other living cells.
Answer: All living cells come from other living cells.
Explanation: That is told in the cell theory. The last option.
When a strip of bark is removed all the way around the trunk of a tree, the tree dies. Explain why.
Answer:
Complete girdling (the bark removed from a band completely encircling the tree) will certainly kill the tree. The reason for damage due to girdling is that the phloem layer of tissue just below the bark is responsible for carrying food produced in the leaves by photosynthesis to the roots.
As DNA splits, what is added to the bases on the original strands?*
Answer:Nucleotide
Explanation:
All changes
saved
4. If you are measuring distance, which of the following prefixes indicate a unit of measure that is larger than the base
unit (meters)? (Choose all that apply)
mega-
kilo-
centi-
giga-
micro-
nano-
Answer:
mega-
kilo-
giga-
Explanation:
The standard unit of distance is in meters. Distance is the length of path covered by a body.
Only mega, kilo and giga are units that are larger than the base unit of distance which is meters.
Mega is of the order 10⁶
Kilo is of the order 10³
giga- is of the order 10⁹
The prefixes below are submultiples:
centi- 10⁻²
micro- 10⁻⁶
nano- 10⁻⁹
Development of the neural groove is known as
neurulation
gastrulation
organogenesis
O involution
Answer:
The correct answer is - neurulation
Explanation:
The neural groove is a groove of the neural plate which is a thick plate that is enclosed by the neural folds of an embryo. The neural grove forms the neural tube which expands and develops into the spinal cord and brain.
The development of the neural grove is taken place during the process known as neurulation which is characterized by all characteristic development related to the neural groove and ventricular system.
Where is O2 used (broken in half and turned into a water molecule)?
Answer:
[tex]H_{2}O[/tex]
Explanation:
Two yeast cells were placed into a special container to which food was continually added, to keep it at a constant concentration. All other factors were set for optimal yeast growth (for example, temperature, oxygen, and pH). The population was sampled every hour for 21 hours and the results of the estimated population size were recorded in the table below.
Answer:
Answer to Two yeast cells were placed into a special container to which food was continually ... All Other Factors Were Set For Optimal Yeast Growth (for Example, ... The Population Was Sampled Every Hour For 21 Hours And The Results Of The ... to which food was continually added, to keep it at a constant concentration.
Explanation:
Answer to Two yeast cells were placed into a special container to which food was continually ... All Other Factors Were Set For Optimal Yeast Growth (for Example, ... The Population Was Sampled Every Hour For 21 Hours And The Results Of The ... to which food was continually added, to keep it at a constant concentration.
An early step in the process of carbon fixation combines three molecules of CO2 with three molecules of RuBP to produce three 6-carbon molecules, which are immediately converted to six 3-carbon molecules. These six molecules are phosphorylated and reduced to produce glyceraldehyde 3-phosphate (G3P). What additional events occur to complete the Calvin cycle
Answer:
release of one G3P to make sugars and regeneration of RuBP
Explanation:
The Calvin cycle can be defined as a part of photosynthesis that utilizes the energy stored by light-dependent reactions to produce three-carbon sugars. The first carbohydrate produced by the Calvin cycle is a three-carbon sugar phosphate called glyceraldehyde-3-phosphate (G3P). Subsequently, G3P is used to produce other sugar molecules such as, for example, glucose. The Calvin cycle consists of three steps: 1-carboxylation (by using CO2 in a reaction catalyzed by Rubisco enzyme), 2-reduction of phosphoglycerate (ATP phosphorylation), and 3-regeneration of ribulose-bis-phosphate (RuBP) by using triose phosphates produced in the first two steps.
What is the main reason countries should work together to reduce air
pollution?
O A. Air and water pollution remain localized.
O B. People carry air pollution from place to place during travel
C. Winds carry air pollution across oceans and continents.
O D. Pollution in a river becomes diluted before it crosses into another
country.
Answer:
C
Explanation:
The main reason countries should work together to reduce air pollution is option C. Winds carry air pollution across oceans and continents.
What is air pollution?It is the contamination of the indoor or the outdoor environment should be chemical, physical, biological agent that changed the natural attributes of the atmosphere.
So here the wind should carry air pollution that across the ocean and continents.
hence, the option c is correct.
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What are the electrical charges of a proton, neutron and electron?
Answer:
Protons are positive while nuetrons are negetive.
Expland nation:
The organic compounds that have many structural purposes and are used
in many processes within the
cell are called?
Answer:
.......is called chemical compound
The organic compounds that have many structural purposes and are used in many processes within the cell are called - Proteins.
The four types of most important organic molecules to structure and function are carbohydrates, lipids, proteins, and nucleotides for many organisms including humans.
Proteins are
biological organic molecules that are the most essential and versatile of all the organic molecules.it forms many cellular structures and molecules and performs various functions within the cell of organisms.They form tissues and muscles, speed up chemical reactions as enzymes, and perform many other cellular functions.Proteins are made up of amino acids form by nucleic acids that include DNA and RNA. DNA contains genetic instructions for proteins, and RNA helps assemble the proteins.
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Which part of my brain is probably damaged if I am unable to recognize basic objects arond my house?
Answer:
The correct answer is - the hippocampus.
Explanation:
Hippocampus is the part of the brain located deep in the temporal lobe that is related to memory and learning abilities. The hippocampus is present in humans and other mammals, two in numbers.
Injuries to the hippocampus will be lead to problems that are associated with a memory like recognition and identifying people or things or the ability to learn things. Direction, locations type of memories would be affected if damaged.
Answer: hippocampus
Explanation: took quiz :)
How do plate tectonics support evolution
Answer:
Explanation: because they caused redistribution between continents, create volcanos and mountains that help populations adapt
Is a lion a producer, herbivore, consumer or a omnivore
Answer:
Lions are primarally carnivors because they only consume meat. Herbivores are animals that only consume plant like rabbits and Ominvores are animals that consumer both like humans., so consumer
Explanation:
A lion is a consumer. In ecological terms, a consumer is an organism that obtains its energy and nutrients by consuming other living organisms.
Lions are carnivores, which means they primarily feed on other animals. They are top-level predators in their ecosystems, preying on a variety of herbivores, such as zebras, wildebeests, and antelopes.
As consumers, lions play a vital role in regulating prey populations and maintaining ecological balance in their habitats. They are not producers or herbivores since they do not engage in photosynthesis or primarily eat plants.
Additionally, lions are not omnivores, which are organisms that consume both plants and animals.
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Describe the relationship between DNA,
chromoSomes, and genes, on edge2020 help please
Answer: Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body.
Explanation: Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.
The systems in the body are continuously monitoring and adjusting to maintain homeostasis. True False
Answer:
it is true
Explanation:
pls give brainly if right
In a certain species of plant, flowers occur in three colors: blue, pink, and white. The genotype that produces white is ww. The presence of one W allele allows pink or blue color to occur. The B (blue) is dominant to b (pink). A pure-breeding pink plant is mated with a pure-breeding white plant. All of the F1 are blue. When the blue F1 plants are self-fertilized, the F2 plants occur in the ratio 9 blue : 3 pink : 4 white. What is the genotype of the original white parent
Answer:
Wwdd
Explanation:
The original white parent is homozygous recessive, meaning it has two copies of the w allele (ww).
What is genotype?The original white parent is homozygous recessive, meaning it has two copies of the w allele (ww). This is because white is the only phenotype produced by a homozygous recessive genotype, and there are four white plants in the F2 generation, meaning that one of the parents must have contributed a w allele to all of the F2 white offspring.
The blue F1 offspring are the result of a cross between the pure-breeding pink parent (whose genotype is Ww) and the pure-breeding white parent (whose genotype is ww). The F1 offspring therefore have the genotype Ww, and since blue is dominant, they all express the blue phenotype.
When the blue F1 plants are self-fertilized, they produce an F2 generation with a 9:3:4 ratio of blue, pink, and white offspring. This is consistent with a 9:3:4 ratio of BB, Bb, and bb genotypes in the F2 generation, since blue is dominant to pink and both are dominant to white.
In conclusion, the original white parent had the genotype ww, which is homozygous recessive and produces the white phenotype.
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ILL GIVE BRAINLIEST PLZ HELP.
Atoms of carbon-14 are radioactive. They decay into atoms of the element nitrogen. Suppose that a sample of rock is taken from a fossil. The sample has 500 atoms of carbon-14 and 1500 atoms of nitrogen. If carbon-14 has a half-life of 5700 years, how old is the fossil? 5700 years old 11,400 years old 17,100 years old 2850 years old
Answer:
11,400 years old
Explanation:
The total number of atoms present at the beginning = number of C-14 + number of N-14 atoms.
Hence;
1500 + 500 = 2000 atoms = No
At time t, N = 500 atoms of C-14 remains
Since the half life of C-14 (t1/2) = 5700 years
N/No = (1/2)^t/t1/2
500/2000 = (1/2)^t/5700
1/4 = (1/2)^t/5700
(1/2)^2 =(1/2)^t/5700
2 = t/5700
t = 2 * 5700
t = 11,400 years old
Which two types of organisms are found in the domain Eukarya?
O A. Fungi
O B. Archaea
O C. Plants
O D. Bacteria
Fungi and Plants are the two types of organisms are found in the domain Eukarya. The correct options are A and C.
Thus, numerous creatures with intricate cell architecture, including a separate nucleus and membrane-bound organelles, are included in the domain Eukarya. This domain includes fungi, which include yeast and mushrooms and are recognized for their distinctive means of getting nutrients and breaking down organic materials.
Algae, trees, and flowering plants all fall under the umbrella of the eukaryotic kingdom. Their capacity to carry out photosynthesis and transform sunlight into energy defines them. Fungi and plants both share key characteristics that set them apart from Archaea and Bacteria, which are members of separate domains and have unique cellular structures and genetic make-ups.
Thus, the ideal selection is option A and C.
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The plasma membrane found in both prokaryotic and eukaryotic cells is composed of a/an _______, which is semipermeable and controls the flow of molecules into and out of the cell.
Answer:
Phospholipid layer
Explanation:
The plasma or cell membrane is the outer covering of prokaryotic (bacteria) and eukaryotic (plants and animal) cells that provides support to the cytoplasm. The plasma membrane is made up of components like phospholipid layer, proteins, etc. However, the PHOSPHOLIPID LAYER component of the plasma membrane confers its SEMI-PERMEABILITY upon it.
The phospholipid layer consists of a hydrophilic i.e. water-loving region (phosphate head) and hydrophobic i.e. water-fearing region (fatty acid tails) that allows it to selectively control the flow of molecules into and out of the cell.
A close long-term relationship between different species in a community is called?
A.) Mutualism
B.) Symbiosis
C.) Commensalism
An example is the relationship between a sunflower and an insect that pollinates it.
