Question

If the genotype of a genetic character are 45 what is the number of alleles for that gene

Answer 1

Answer:

47 is the answer please mark me as the brainliest

Answer 2

Answer:

The answer is 9.

Explanation:

The number of integers between 1 to n is equal to the number of genotypes. [n = no. of alleles]

Given, The number of genotypes is 45.

The number of alleles = ?

Calculation -

$1+2+3+4+......+n = 45$

$n(n + 1)/2 = 45$             [because n(n + 1)/2 is the formula for the sum of the first n-natural numbers]

$n^{2} + n = 90$

$n^{2} + n - 90 = 0$

$n^{2} +10n - 9n - 90 = 0$

$n(n + 10) - 9(n + 10) = 0$

$(n - 9) (n + 10) = 0$

$n = 9 \\or \\n = -10$

Hence, the number of alleles is 9.

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