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

The monohybrid genotypic ratio 1:2:1 in F2 generation indicates ___.


A

Segregation

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B

independent assortment

No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

dominance

No worries! We‘ve got your back. Try BYJU‘S free classes today!
D

incomplete dominance

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A

Segregation


The alleles of the monohybrid F1 segregate and enter into gametes separately without blending. The F1 plants thus produce two types of gametes, one having the dominant factor and the other having the recessive factor. Assuming that these gametes combine randomly, we could say that in the F2 generation, homozygous dominant, heterozygous dominant and homozygous recessive individuals are produced in a 1:2:1 ratio. Had they not segregated, the F1 progeny would have produced only a single type of gamete, probably a mix between the dominant and the recessive factor. And we would not have obtained the homozygous condition of the parents back again in the F2generation.



This indicates segregation of the alleles,


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Mendel's Experiments
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon