Question

What do you mean by heterogametic & homogametic ?

Why are male birds heterogametic ? ​

Answer 1

Answer:

Because males have different chromosomes (XY), they are called heterogametic (hetero for different). ... For example, the eggs (ova) in the female all carry the X chromosome. The sperm can carry either the X or the Y chromosome, so it is the sperm that determines if the offspring is XY (male) or XX (female).

I know only 2nd one

Answer 2

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Heterogametic sex (digametic sex) refers to the sex of a species in which the sex chromosomes are not the same. For example, in humans, males, with an X and a Y sex chromosome, would be referred to as the heterogametic sex, and females having two X sex chromosomes would be referred to as the homogametic sex.

Heterogametic sex (digametic sex) refers to the sex of a species in which the sex chromosomes are not the same. For example, in humans, males, with an X and a Y sex chromosome, would be referred to as the heterogametic sex, and females having two X sex chromosomes would be referred to as the homogametic sex.Because males have different chromosomes (XY), they are called heterogametic (hetero for different). ... For example, the eggs (ova) in the female all carry the X chromosome. The sperm can carry either the X or the Y chromosome, so it is the sperm that determines if the offspring is XY (male) or XX (female).

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