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poizon [28]
2 years ago
8

What effect does stabilizing selection have on variation in a population.

Biology
1 answer:
blondinia [14]2 years ago
6 0

Answer:

Stabilizing selection results in a decrease of a population 's genetic variance when natural selection favors an average phenotype and selects against extreme variations. In directional selection, a population's genetic variance shifts toward a new phenotype when exposed to environmental changes.

Explanation:

I don't bite, don't worry

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Homeostasis

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Homeostasis- state of maintaining a stable internal enviornment despite changing external conditions

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Why are protists not considered bacteria?
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3 years ago
In beetles, the gene for color and the gene for pattern are located on the same chromosome and exhibit recombination. The lined
Pie

Explanation:

The genes that determine color and pattern are linked.

  • Solid pattern allele (L) is dominant over lined pattern (l)
  • Blue color allele (B) is dominant over aqua color (b)

<h3><u>Initial cross</u></h3>

Homozygous lined aqua beetle has the genotype <em>lb/lb</em>

It can produce only 1 type of gamete: <em>lb</em>

X

Homozygous solid blue beetle has the genotype<em> </em><em>LB/LB</em>

It can produce only 1 type of gamete:<em> </em><em>LB</em>

The F1 is formed by the union of the parents' gametes, so it will have the genotype  <em>lb/LB</em>

<h3><u>F1 test cross</u></h3>

Test crosses involve a homozygous recessive individual.

<u>The homozygous recessive individual</u><u><em> lb/lb</em></u><u> can only produce 1 type of gamete:</u>

  • <em>lb</em>

<u>The F1 individual </u><em><u>lb/LB</u></em><u>  can produce 4 types of gametes:</u>

  • lb - parental
  • LB - parental
  • lB - recombinant
  • Lb - recombinant

8 0
4 years ago
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