Gynandromorphs develop in Drosophila when the | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) Gynandromorphs in Drosophila are organisms that exhibit both male and female characteristics.They originate from a zygote that is initially female

Vedclass · Accepted Answer

$2A + XX$ in one cell and $2A + X$ in the other

Vedclass · Answer

(A) Gynandromorphs in Drosophila are organisms that exhibit both male and female characteristics.They originate from a zygote that is initially female $(2A + XX)$.During the early cleavage stage (two-celled proembryo),one of the $X$ chromosomes fails to move to the daughter cell due to non-disjunction or chromosome loss.As a result,one daughter cell retains the normal female genotype $(2A + XX)$,while the other daughter cell receives only one $X$ chromosome $(2A + X)$,which develops into male tissue.Therefore,the correct chromosomal configuration is $2A + XX$ in one cell and $2A + X$ in the other.

Gynandromorphs develop in Drosophila when the two cells in the two-celled proembryo have one of the following chromosomal sets:

Similar Questions

Assertion : In humans,the gamete contributed by the male determines whether the child produced will be male or female.
Reason : Sex in humans is a polygenic trait depending upon a cumulative effect of some genes on $X-$ chromosome and some on $Y-$ chromosome.

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

Sex-linked characters are:

What is the number of chromosomes in a sterile female worker bee in a beehive?

In the given figure, the part indicated by $B$ is produced by which process?

Vedclass Test Series

Exam Paper Generator

Online Exam Module