Principle Of Inheritance And Variation Question 287
Assertion : The lampbrush chromosomes are called diplotene chromosomes. Reason : The number of loops is maximum during diplotene.
Options:
A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are false
Show Answer
Answer:
Correct Answer: B
Solution:
The lampbrush chromosomes are highly elongated special kind of synapsed diplotene chromosome bivalents which have already undergone crossing over. They occur in diplotene stage of most animal oocytes, spermatocytes of many and even giant nucleus of unicellular alga Acetabularia. The number of pairs of loops gradually increases in meiosis till it reaches maximum in diplotene.
BETA
