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Westkost [7]
3 years ago
14

How might genetic drift be important in a small population. see section 23.4 (page 470) . view available hint(s) how might genet

ic drift be important in a small population. see section 23.4 (page 470) . it decreases genetic diversity only by reducing population size. it increases genetic diversity by introducing alleles from one population into another. it decreases genetic diversity via sampling error during mating. it increases genetic diversity by introducing new genes into the dna of a species?
Biology
1 answer:
frutty [35]3 years ago
4 0
The correct answer is it decreases genetic diversity only by reducing population size.  
<span>
The great explanation for this is a bottleneck effect, which is an extreme example of genetic drift. The bottleneck effect occurs when the size of a population is reduced due to a catastrophe. When it happens, only a small, random number of individuals survive the event and pass through the bottleneck. Thus, the genetic composition of the random survivors is now the genetic composition of the entire population which means that the genetic diversity is reduced.</span>
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If you could monitor the activity from the photoreceptors of rods and cones in the retina during a dream, would you expect these
loris [4]

The question is incomplete as it does not have the options which are:

- Yes, because people's eyes move during sleep, and this stimulates the rods and cones.

- No, because rods and cones only convert light energy into electrical signals.

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- Yes, because the rods and cones are reproducing images that are then sent to the brain.

Answer:

No, because rods and cones only convert light energy into electrical signals.

Explanation:

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4 0
3 years ago
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telo118 [61]

The likelihood that the first two offspring of the cross will have congenital analgesia would be 1/16

<h2>Autosomal Recessive Traits</h2>

For autosomal recessive traits, two recessive alleles are needed for the trait to manifest while one recessive allele means heterozygosity.

In this case, let us assume that congenital analgesia is represented by the allele b; heterozygous individuals will, thus, be Bb.

            Bb    x    Bb

          BB   Bb   Bb   bb

Probability of producing unaffected offspring = 3/4

Probability of producing affected offspring = 1/4

Likelihood of the first two offspring having congenital analgesia = probability of first having congenital analgesia and the second having congenital analgesia

    = 1/4 x 1/4

        = 1/16

More on genetical probabilities can be found here: brainly.com/question/851793?referrer=searchResults

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