Do all cells have homologous chromosomes?
All cells have homologous chromosomes except for the reproductive cells of higher organisms. Cells with homologous chromosomes are diploid. Reproductive cells, called gametes, are different. They contain only half the full number of chromosomes—one chromosome from each pair.
Which of the following chromosomes does not have a homologous partner in humans?
A human male has two sex chromosomes, the X and the Y. Unlike the 44 autosomes (non-sex chromosomes), the X and Y don’t carry the same genes and aren’t considered homologous. Instead of an X and a Y, a human female has two X chromosomes. These X chromosomes do form a bona fide homologous pair.
Where do homologous chromosomes exist?
During metaphase I, the homologous chromosomes are arranged in the center of the cell facing opposite poles. Random orientation of the homologous pairs occurs at the equator. This is important in determining the genes carried by a gamete. Each gamete will only receive one of the two homologous chromosomes.
Which is not a characteristic of homologous chromosomes?
In homologous chromosomes, genes for a specific trait will be located in the same positions. However, the type of allele for the trait might not be the same. For example, the position of the allele for the eye color will the same in homologous chromosomes.