Which of the Following Statements About Human Chromosomes are True

Question

Which of the following statements about human chromosomes are true? Please select all that apply.
A) Humans have 46 pairs of chromosomes
B) The X chromosome is larger than the Y chromosome
C) Chromosome 7 is smaller than chromosome 15
D) The human diploid number is 23

Accepted Answer

Humans have 46 chromosomes in total, in 23 pairs. The number of sets of chromosomes is referred to as ploidy (i.e., haploid = 1 set, diploid = 2 sets, triploid = 3 sets, etc.). The number of different chromosomes is the number in one set - so the human haploid number is therefore 23. Apart from the sex chromosomes and the two smallest non-sex chromosomes, human chromosomes are numbered in order of size, so chromosome 7 is larger than chromosome 15. In humans, the X chromosome is larger than the Y chromosome.