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liberstina [14]
3 years ago
7

Why are variations beneficial in natural selection

Biology
1 answer:
Allushta [10]3 years ago
7 0

<u>Answer:</u>

  • Variation is the slight difference in the genotype of the individual than the parent’s traits.
  • So, the variation causes the evolution that helps in increasing the frequency of natural selection of creatures.

<u>Explanation:</u>

  • By the variation, the characteristics of individuals changes, some become faster, more intelligent and some become more fool, in this way the nature adopts the intelligent and fast enough creatures to survive and other to disappear in nature.
  • Variation is a key to evolution and helps in the natural selection process.
  • This unique character actually interacts with the environment and helps in the game of natural selection.
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The correct answer is 160.

Explanation:

Based on the given question, the total number of fruit flies is 1000, of which red eye flies are 640. Thus, the number of sepia eye flies will be 1000-640 = 360.  

On the basis of the Hardy-Weinberg equation, p+q = 1, in which p is the rate of recurrence of one allele, that is, dominant and q is the rate of recurrence of the other allele, that is, recessive.  

q^2 for the population is 360/1000 = 0.36, q = 0.6.  

Therefore, p = 1-q = 1-0.6 = 0.4.  

The frequency of homozygous dominant allele is denoted by p^2 = 0.16.  

Hence, the number of homozygous dominant for red eye color would be 16% of 1000 which will be equal to 160.  

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