wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

How many autosomes and allosomes are present in human beings?

A
(21+2) pairs
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
(22+1) pairs
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
(19+4) pairs
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
(2+21) pairs
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B (22+1) pairs
  • There are 22 pairs of autosomes and one pair of allosomes (also called sex chromosomes), thus a total of 23 pairs of chromosomes.
  • In human karyotype, the autosome pairs are labelled with numbers, while the sex chromosomes are labelled with letters. Females (44+XX) have two X chromosomes while males (44+XY) contain one X and one Y chromosome.

flag
Suggest Corrections
thumbs-up
7
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Chromosomes
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon