EASY
Earn 100

During meiosis, crossing over occurs between:

50% studentsanswered this correctly

Important Questions on Cell Cycle and Cell Division

HARD
In a testcross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant-type offspring. This indicates:
HARD
"Complete linkage is rare" explain it with a suitable example.
MEDIUM

The following family tree traces the occurrence of a rare genetic disease. The filled symbols signify the individuals with the disease, whereas the open symbols signify healthy individuals.

Question Image

Based on this information, the disease is most likely to be:

EASY

Give one significant difference between the following:

Linkage and crossing over

MEDIUM

Given below are two statements one is labelled as: Assertion (A) and the other is labelled as Reason (R).

Assertion (A): Mendel's law of independent assortments does not hold good for the genes that are located closely on the same chromosome.

Reason (R): Closely located genes assort independently.

In light of the above statements, choose the correct answer from the options given below:

MEDIUM
Alkaptonuria (aa) is which type of error?
MEDIUM

Assertion (A): The proportion of parental gene combinations was much lighter than non-parental type

Reason (R): Gene combination is due to linkage of the two genes

EASY
What are the conclusions drawn by T.H. Morgan from the crossing experiments in Drosophila with respect to linkage?
EASY
Two genetic loci controlling two different traits two different traits are linked. During the inheritance of these traits, the Mendelian laws that would be affected is/are:
MEDIUM
Which of the following is not a characteristic of Drosophila melanogaster?
MEDIUM
Write differences between linkage and crossing over.
MEDIUM
Identify the incorrect statement from the following.
MEDIUM
After meiosis-II, daughter cells differ from the parent cells and each other in their genotypes. This can occur because of which one of the following mechanism (s)?
HARD
How did Sturtevant explain gene mapping while working with Morgan?
EASY
Identify the event in meiosis mediated by the enzyme recombinase.