Question

15. Simplify the following
(i) (x2 - y2)2 + 4x2y2
(ii) (p + q)2- (p - q)2 + p?q?​

Answer 1

Answer:

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Step-by-step explanation:

(i) answer is

Answer:x4+y4+2x2y2Step-by- step explanation:(x^2)^2-2x^2y^2+(y^2)^2+4x^2y^2=X^4+y^4+2x^2y^2

(ii)Hardy-Weinberg principle describes a theoretical situation in which a population is undergoing no evolutionary changes. According to Hardy-Weinberg principle, the balance in the relative numbers of alleles that is maintained within a large population over a period of time assuming that : (i) mating is random (2) there is no natural selection (3) there is no migration (4) there is no mutation. In such a stable population, for a gene with two alleles A (dominant) and a (recessive). If the frequency of A is p and a is q, then the frequencies of the three possible genotypes (AA,Aa and aa) can be expressed by the Hardy-Weinberg equation; p

2

+2pq+q

2

=1.

So, the correct answer is 'Population genetics'.