The AA+ XO type of chromosome constitution is seen in :

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Important Questions on Heredity and Variation

EASY

Biology>Genetics and Evolution>Heredity and Variation>Sex Determination

XO

type of sex determination can be found in:

EASY

Biology>Genetics and Evolution>Heredity and Variation>Sex Determination

From the chromosomal complements given below, identify the one which shows female heterogamety.

EASY

Biology>Genetics and Evolution>Heredity and Variation>Sex Determination

In a certain taxon of insects (Example: Cockroach), some have

17

chromosomes and the others have

18

chromosomes. The

17

and

18

chromosomes bearing organisms are _________

EASY

Biology>Genetics and Evolution>Heredity and Variation>Sex Determination

In which of the organism, the following type of sex determination is possible

Question Image

MEDIUM

Biology>Genetics and Evolution>Heredity and Variation>Sex Determination

Haplo-diploid insects have diploid females from fertilized eggs but haploid males from unfertilized ones. Such a haploid male with red eyes is crossed with a white-eyed female. Assuming that the red-eye colour mutation is dominant over the white-eye colour, which one of the following statements is true?

MEDIUM

Biology>Genetics and Evolution>Heredity and Variation>Sex Determination

Select the incorrect statement.

EASY

Biology>Genetics and Evolution>Heredity and Variation>Sex Determination

The chromosome complement of the somatic cells in all human being is

EASY

Biology>Genetics and Evolution>Heredity and Variation>Sex Determination

Heterogametic male condition does not occur in

EASY

Biology>Genetics and Evolution>Heredity and Variation>Sex Determination

How many chromosomes are present in an unfertilized egg