Question

If a cell has a diploid number of 6, how many homologous chromosomes are in the cell at the end of telophase I?

Answer 1

Answer:

If a diploid cell contains 6 chromosomes, how many possible random arrangements of homologous chromosomes could occur during Metaphase 1?

Here there is a fact, that should be understood,

In each and every cell there will be a pair of sex chromosomes in diploid organisms irrespective of the number of chromosomes. But the sex chromosomes are non homologous due to differences in their size and gene composition.

Now, coming to the question, if there are six chromosomes the number of homologous chromosomes will be four( 6–2) i e two homologous pairs.

There are two chances for both chromosomes of a bivalent to occupy their place on metaphase plate during meiosis 1.

Thus the possibility of random arrangements would be 2!×2!=4

Explanation: