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Leptotene

What is the d...

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What is the difference between chromatid, chromosome, bivalent, tetrad and ploidy? Kindly explain with a diagram.

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What is the difference between chromosome and chromatid?

When do we have to use these two terms? Give the explanation with diagrams.

Which of the following is correct about bivalent?

(i) Bivalents are tetrads.
(ii) A bivalent means 4 chromatids and 2 centromeres.
(iii) One bivalent consists of 2 homologous chromosomes.
(iv) Bivalents form in zygotene.

Q. Which of the following statements hold true for bivalents?
(i) Generally a bivalent is an association of four chromatids and two centromere.
(ii) It is a homologous chromosome.
(iii) Crossing over occurs between two different kinds of bivalents.

Q. A bivalent consists of ______ pair/pairs sister chromatid/chromatids and ______ pair/pairs of homologous chromosomes.

Q. A bivalent consists of ______ pair/pairs sister chromatid/chromatids and ______ pair/pairs of homologous chromosomes.

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