Question

if the meiocyte of a Maize plant contains 20 chromosomes. write the number of chromosomes in the endosperm and embryo of the Maize grain and give reasons to support of your answer?

please answer

Answer 1

Answer:

Number of chromosomes in endosperm is 30 and embryo contains 20.

Explanation:

If the meiocyte of a maize plant contains 20 chromosomes, then the number of chromosomes in the endosperm and the embryo of the maize grain are 30 and 20 respectively.

We know, if a meiocyte have 20 chromosomes then the gamete cell is half of it, i.e., 2n=20 or n=10, so the gamete will have 10 chromosomes.

And the endosperms are triploid in nature, i.e., 3n.

Therefore the meiocyte having 20 chromosomes have 30 chromosomes (3×10=30).

And we know, an embryo is diploid in nature, so the embryo of the maize grain will have 20 chromosomes (2×10=20).

Answer 2

Answer:

chromosome in endosperm and embryo is 30 and 20  respectively

Explanation:

gamete  = 2n

n=10

chromosome in endosperm = 3n

= 30

chromosome in embryo = 2n

= 20