wiz-icon
MyQuestionIcon
MyQuestionIcon
19
You visited us 19 times! Enjoying our articles? Unlock Full Access!
Question

On selfing a plant of F1 generation with genotype AABbCC, the phenotypic ratio in F2 generation will be:


A

3 : 1

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

1 : 1

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

9 : 3 : 3 : 1

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

27 : 9 : 9 : 3 : 3 : 3 : 1

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

The correct option is A

3 : 1


Since only one gene is in heterozygous condition, only two types of gametes will be produced by either parent. The gametes will be ABC and AbC. The cross of them will produce three combinations as follows. For two combinations since one dominant allele (B) is present, it will produce the same phenotype whereas the homozygous recessive condition f that gene will give another phenotype, as shown in the following figure.

Since only one gene is heterozygous, the ratio of two phenotypes will be similar to that of the F2 generation in a monohybrid cross i.e 3 : 1


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