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Aneli [31]
3 years ago
5

Explain the idea of genetic drift. How does natural selection effect genetic drift.

Biology
1 answer:
Anettt [7]3 years ago
3 0

Genetic drift is defined as a shift in the allelic frequency of a population. This can be caused by natural selection which is the differential survival and reproduction of individuals across a population due to differences in phenotype. Natural selection favors particular traits in a population hence these individuals are able to reproduce while the individuals with disadvantageous traits will pass their genes to succeeding generations. This way the allelic frequency of succeeding generation will be diferent from that of the parent population.

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Wind blows finer particles long distances from glacial environments, where they settle out a form
fenix001 [56]

Hey There,

Wind blows finer particles long distances from glacial environments, where they settle out to form <u>firn</u>. Firn is a type of snow which is located on the upper part of a glacier that has not turned into ice.

7 0
3 years ago
A researcher is curious if Bt resistant bollworms are susceptible to an insecticide called DDT. Bollworms susceptible to Bt have
Shalnov [3]

Answer:

The correct answer is - 3/16 or 18.75% portion will be resistant to both Bt and DDT.

Explanation:

It is given that bollworms that are susceptible to Bt are represented by either RR or Rr and resistance one are shown by rr genotype and bollworms that are resistant to DDT are represent TT or Tt genotype and susceptible to DDT have tt genotype.

Cross: RR tt with rr TT

Gametes: Rt and rT

F1 cross:

    RT

rT  RrTt ( susceptible Bt and resistant DDT)

F1 Cross with F1

Gametes: RT, Rt, rT and rt

cross:

             RT      Rt        rT         rt

RT       RRTT   RRTt   RrTT    RrTt

Rt        RRTt    RRtt    RrTt      RrTt

rT       RrTT    RrTt     rrTt       rrTt

rt       RrTt      Rrtt     rrTt      rrtt

The bold genotypes are the three out of 16 that are resistant to both DDT and Bt.

8 0
3 years ago
Why is the triceps brachii muscle sometimes called the boxer's muscle?
Sav [38]
It is the muscle that is most used in boxing of course!

Hope this helped!
8 0
3 years ago
Which discovery did Gregor Mendel make?
lana66690 [7]
"Traits are inherited independently of each other" is the one discovery among the following choices given in the question that <span>Gregor Mendel did make. The correct option among all the options that are given in the question is the first option. I hope that this is the answer that has come to your desired help.</span>
8 0
3 years ago
Read 2 more answers
Read the video transcript from Dr X and the Quest for Food Safety. What most likely is the purpose of the rescue scene at
fgiga [73]

Answer:

A

Explanation:

She already got it I was just adding an anwser for someone if anybody didnt see her comment on the question.

GOOD LUCK ON THE TEST!!

5 0
3 years ago
Read 2 more answers
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