Question

extra credit (2 pts): which pair of chromosomes in a normal karyotype is not homologous? be specific and use a complete sentence.

Explanation:

In a normal human karyotype, homologous chromosomes are pairs that have the same size, shape, and gene loci. The sex chromosomes (the 23rd pair) in males (XY) are not homologous. The X and Y chromosomes differ in size, shape, and gene content.

Answer:

In a normal human karyotype, the 23rd pair (XY in males) is not homologous.