A fruit fly is heterozygous for sex-linked ge | vedclass

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

Question

(A) In fruit flies ($Drosophila$ $melanogaster$),the sex determination is of the $XY$ type. When a male is heterozygous for sex-linked genes,he posses

Vedclass · Accepted Answer

$1$

Vedclass · Answer

(A) In fruit flies ($Drosophila$ $melanogaster$),the sex determination is of the $XY$ type. When a male is heterozygous for sex-linked genes,he possesses one $X$ chromosome and one $Y$ chromosome. During meiosis,the $X$ chromosome and the $Y$ chromosome segregate into different gametes. As a result,$50\%$ of the sperm cells receive the $X$ chromosome and $50\%$ receive the $Y$ chromosome. Therefore,the ratio of male-specific chromosomes ($X$ and $Y$) entering the gametes is $1:1$.

$A$ fruit fly is heterozygous for sex-linked genes and is mated with a normal female fruit fly. In what proportion will the male-specific chromosomes enter the egg cells (in $:1$)?

Similar Questions

$A$ male child will be born if:

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

Which of the following is responsible for sex determination in chicks?

Distinguish between: Sex determination in humans and Sex determination in Drosophila.

Organism with male heterogamety $- P$
Organism with female heterogamety $- Q$
$I -$ Human,$II -$ Bird,$III -$ Drosophila,$IV -$ Grasshopper
Select the correct option for $P$ and $Q$.
$\quad P \quad\quad Q$

Vedclass Test Series

Exam Paper Generator

Online Exam Module