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

In Mendel's experiments with garden pea, round seed shape (RR) was dominant over wrinkled seeds (rr), yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the F2 generation of the cross RRYY×rryy?

A
Only round seeds with green cotyledons
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Only wrinkled seeds with yellow cotyledons
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Only wrinkled seeds with green cotyledons
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Round seeds with yellow cotyledons, and wrinkled seeds with yellow cotyledons
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D Round seeds with yellow cotyledons, and wrinkled seeds with yellow cotyledons
When a dihybrid cross is made between round yellow (RRYY) and wrinkled green (rryy) seeds, all plants of the F1 generation are with yellow round seeds with a heterozygous genotype of RrYy.
Now the phenotypes of the F2 generation are as follows

Hence, the correct option here is round seeds with yellow cotyledons and wrinkled seeds with yellow cotyledons.

flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Mendel's Experiments
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon