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sveta [45]
3 years ago
7

What is a distinction that can be drawn between macroevolution and microevolution?

Biology
1 answer:
nikitadnepr [17]3 years ago
8 0
<span>Microevolution refers to changes in the genetic pool of a species population. The changes in the genes (probably gene and allele frequencies) are observed over short time periods hence are small changes. This is in comparison to macroevolution that observes huge changes over longer time periods  in the population that warrant that the new populations is considered to be a new species</span>
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A woman has her personal genome analyzed for the BRCA1 mutation after learning that her father is heterozygous and carries one m
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Answer:

a. 50%

Explanation:

<em>BRCA1 genes is a tumor supressor gene whose harmful mutation can cause hereditary breast ovarian cancer syndrome in both males and females. The BRCA actually stands for breast cancer.</em>

<em>Mutation in BRCA1 gene is heritable and every progeny of a carrier parent irrespective of the sex has a 50% chance of inheriting the trait from such parent, be it from the mother or the father.</em>

Hence, the correct option is a.

5 0
3 years ago
Plant Cell Writing Prompt
jeka94

Answer:

Plant cell

Explanation:

Cell wall: cell wall is only found in plant cell . it is made up of cellulose. it's function is to give shape to the cell and protect the delicate inner parts of the cell. this cell is fully permeable. it means it will allow all substance to pass in. cell membrane is made up of protein and lipids. it's function is to control what comes in and out of the cell. this membrane is selectively permeable. it means it allows some substance to pass in and others don't. cytoplasm is large sac like structure. most chemical process occur here. chromoplast are the green pigments.

cell wall is only found in plant cell . it is absent In animal cell . the neucleus in the plant cell contain a pigments haemoglobin, which contain genetic information to the cell .

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3 years ago
Which of the following is TRUE about this reaction?
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The right answer is C

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Some bacteria (Pseudomonas) are able, anaerobically, to reduce nitrates to nitrites and then, depending on the case, to dinitrogen (with the enzyme Nitrate reductase A).

NO3- ==> NO2- ==> N2.

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in a predictable pattern!!

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tensa zangetsu [6.8K]

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The double membrane of the mitochondria is highly folded,and therefore wider when unfolded than that of the nucleus.This is an adaptive feature  to increase the surface area for reactions (electrochemical  gradient) by accommodating protons pumped into it by the proton motive force(PMF)  from the matrix to set up the electrochemical gradients needed to generate the energy needed by ATPase synthase enzymes for ATPs synthesis.

Required number of protons needed to be accommodated by the double membrane to generate enough energy for ATPase synthesis,therefore larger surface area is needed.

Explanation:

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3 years ago
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