Consider the image below, which shows a cell nucleus with one pair of homologous
ID: 203790 • Letter: C
Question
Consider the image below, which shows a cell nucleus with one pair of homologous chromosomes that has not undergone crossing over. Then, clck on all of the true statements This could be a homologous pair of autosomes Chromabds C and D carry the same alleles lf this cell undergoes moss the daughter cells will each contain two chromosomes Chromatd A is identical to chromatid C The diploid number of this ce is 2n = 4 If this cell undergoes meiosis, the daughter cells will each contain one chromosome
Explanation / Answer
A and B form one chromosome while C and D form another chromosome. Homologous chromosome has two chromosomes, one inherited from each parent. They have the same genes but can have different alleles of the genes. The ’n’ is the number of chromosomes in a cell. Diploid cells have 2n number of homologous chromosome.
In Y chromosome, the one chromatid of one chromosome is smaller due to deletion. Hence, the image shows a possible pair of autosomes.
After mitosis, each daughter cell has exact same number of chromosomes as parent cell. The parent cell has 2n chromosome= 2 X 1= 2 chromosomes. Hence, the daughter cell will have 2 chromosomes.
After meiosis, there is reduction of chromosome to half (haploid). Hence, each daughter cell has one chromosome.
Right Options are:
This could be a pair of homologous pair of autosomes.
Chromatids C and D carry the same allele (as they are part of same gene).
If this cell undergoes mitosis, the daughter cells will each contain two chromosomes.
If this cell undergoes meiosis, the daughter cells will each contain one chromosomes.