6. In a population of angiosperms in Hardy-Weinberg equilibrium, the allele, C, conferring red flowers is completely dominant to the allele, c, causing white flowers. If allele C is at frequency 0.7 in the population, what is the expected frequency of red flowered plants

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Answer:

The correct answer is - 0.91.

Explanation:

Given that C is dominant over c with an allelic frequency of 0.7. The sum of the frequency of dominant alleles and the frequency of heterozygous alleles in this H-W population of angiosperm will be the expected frequency of red-flowered plants.

The frequency of C = 0.7

(p² = dominant allele frequency)

Then, the frequency of dominant genotype CC would be = 0.7×0.7 (p² = dominant allele frequency)

As we know that P + q = 1

then q = 1 - p

q (frequency of recessive allele) - 1 - 0.7

q = 0.3

Then frequency of heterozygous genotype Cc= 2pq

= 2×0.7×0.3

= 0.42

The frequency of red flowers = freq of CC + freq of Cc

= 0.49 + 0.42

= 0.91

Given that C is dominant over c with the frequency of 0.7

The sum of the frequency of dominant allele and heterozygous alleles in this H-W population of angiosperms expected frequency of red-flowered plants.

frequency of C = 0.7

[tex]p^{2} =dominant allele[/tex]

CC= 0.7 × 0.7

[tex]p+q =1\\q= 1- p\\= -1-0.7\\=0.3\\[/tex]

Then frequency of genoype = Cc= 2pq

= 2×0.7×0.3

= 0.42

[tex]frequency of red flower = freq of CC + freq of Cc[/tex]

= 0.49 + 0.42

= 0.91.

What is Hardy-Weinberg equilibrium?

It is a principle that states genetic variation in a population will remain constant from one generation to the next generation in the absence of disturbing factors.

Hence concluded that the frequency of red-flowered plants = 0.91

To know more about Hardy-Weinberg equilibrium refer to the link :

https://brainly.com/question/3406634