Question

9) (i) Why are grasshopper and drosophila said to show male heterogamy? Explain. (2)

(ii) Explain female heterogamy with the help of an example. ?​

Answer 1

Answer:

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this question is in the book

Answer 2

Answer:

I).

Grasshoppers exhibit XO type of sex determination. Males produce two types of gametes, one with X chromosome and other with no chromosome. Thus, both show male heterogamety. (ii) Female heterogamety can be seen in female birds.

ii).

In birds female has ZW, produce two kinds of gametes and so heterogametic. Detailed answer: Production of dissimilar types of gametes by females is called as female heterogametic. ... In females'birds the sex chromosomes are ZW and produce to types gametes (A + Z) and (A + W) this showing heterogamety.