wiz-icon
MyQuestionIcon
MyQuestionIcon
21
You visited us 21 times! Enjoying our articles? Unlock Full Access!
Question

In a testcross involving F1 dihybrid flies, more parental – type offspring were produced than the recombinant – type offspring. This indicates:

A
The two genes are located on two different chromosomes
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Chromosomes failed to separate during meiosis
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
The two genes are linked and present on the same chromosome
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
Both of the characters are controlled by more than one gene
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C The two genes are linked and present on the same chromosome
If we recall Morgan's experiment, in which he found that when the two genes in a dihybrid cross were situated on the same chromosome, the proportion of parental gene combinations were much higher than the non - parental type. He attributed this due to the physical association or linkage of the two genes and coined the term as linkage to describe this physical association of genes on a chromosome and the term recombination to describe the generation of non - parental gene combinations.

So in a testcross involving F1 dihybrid flies, if more parental – type offspring were produced than the recombinant – type offspring, that means the two genes are linked and present on the same chroomosome.

flag
Suggest Corrections
thumbs-up
2
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Mendel's Experiments
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon