What would be the number of chromosomes in th | vedclass

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

Question

(D) Klinefelter's syndrome is a chromosomal disorder characterized by an extra $X$ chromosome,resulting in a genotype of $47, XXY$.In a normal human,t

Vedclass · Accepted Answer

$24$

Vedclass · Answer

(D) Klinefelter's syndrome is a chromosomal disorder characterized by an extra $X$ chromosome,resulting in a genotype of $47, XXY$.In a normal human,the diploid number of chromosomes is $46$ ($44 + XX$ or $44 + XY$).$A$ normal sperm provides $23$ chromosomes ($22 + X$ or $22 + Y$).To result in a $47, XXY$ zygote,the ovum must have contributed $24$ chromosomes ($22 + XX$ due to non-disjunction of $X$ chromosomes during meiosis).Therefore,the ovum contained $24$ chromosomes.

What would be the number of chromosomes in the ovum (fertilized by a normal sperm) that resulted in the appearance of Klinefelter's syndrome in the offspring?

Similar Questions

Due to non-disjunction of chromosomes during spermatogenesis,sperms carry both sex chromosomes $(22A + XY)$ and some sperms do not carry any sex chromosome $(22A + O)$. If these sperms fertilize normal eggs $(22A + X)$,what types of genetic disorders appear among the offspring?

The number of Barr bodies in a $XXXX$ female is:

Mark the odd one with respect to the syndrome which occurs due to the failure of segregation of homologous pairs of chromosomes during the cell division cycle.

What is the cause of $Down's$ syndrome?

Find the incorrect statement among the following:

Vedclass Test Series

Exam Paper Generator

Online Exam Module