Question

A diploid cell contains three pairs of homologous chromosomes designated C1 and C2, M1 and M2, and S1 and S2; no crossing over occurs.What possible combinations of chromosomes will be present inA) daughter cells following mitosis?C1/C2 , M1/M2 , S1/S2B) the first meiotic metaphase?C1/C2 , M1/M2 , S1/S2C) haploid cells following both divisions of meiosis? (this is where I need help)Select All That ApplyA. C1, M1, S1B. C1, M1, S2C. C2, M2, S2D. C1, M2, S1E. C1, M2, S2F. C2, M1, S2,G. C2, M1, S1,H. C2, M2, S1

Answer 1

Your question is in three parts, you asked for a help on the THIRD part, it is provided below.

Answer:

The combinations of chromosomes present in

A) daughter cells following mitosis will be C1/C2 , M1/M2 , S1/S2

B) the first meiotic metaphase will be C1/C2 , M1/M2 , S1/S2

C) haploid cells following both divisions of meiosis will be C1, M1, S1 & C2, M2, S2

Step-by-step explanation:

A diploid cell has two sets of chromosomes called homologous chromosomes and represented as 2n.

For part A: The daughter cells after mitosis has SAME chromosome number and content as parent diploid cell C1/C2 , M1/M2 , S1/S2 as homologues because NO exchange of material (crossing over) occur during mitotic division

For part B: During the 1st meiotic metaphase, chromosomes of the diploid cell are just assembled, they are YET to be separated, thus its chromosome is SIMILAR to diploid cell

For part C: haploid cells following both divisions of meiosis will be C1, M1, S1 & C2, M2, S2. This is because during meiosis, the number of chromosomes in diploid cell is HALVED (2n becomes n). Thus, haploid cells carries ONLY one set of chromosomes in diploid cell.