Homologous chromosomes are chromosomes that share: The same structural features (e.g. same size, same banding patterns, same centromere positions) The same genes at the same loci positions (while the genes are the same, alleles may be different)
What are similarities homologous chromosomes?
The two chromosomes in a homologous pair are very similar to one another and have the same size and shape. Most importantly, they carry the same type of genetic information: that is, they have the same genes in the same locations.
What 4 things are the same for homologous chromosomes?
In biology, homologous chromosomes are paired chromosomes. They essentially have the same gene sequence, loci (gene position), centromere location, and chromosomal length.
What could account for the small differences between a few of the homologous chromosomes?
What could account for the small differences between a few of the homologous chromosomes? Each homologous chromosome in a pair is from a different parent. … First-division nondisjunction will only yield gametes with an extra chromosome, whereas second-division nondisjunction will only yield gametes missing a chromosome.
What makes homologous chromosomes homologous quizlet?
Homologous chromosomes are chromosome pairs, one from each parent, that are similar in length, gene position and centromere location. … Each carries the same genes in the same order, but the alleles for each trait may not be the same.
What is the difference between homologous and homologs?
Homology forms the basis of organization for comparative biology. A homologous trait is often called a homolog (also spelled homologue). In genetics, the term “homolog” is used both to refer to a homologous protein and to the gene ( DNA sequence) encoding it. … Such sequences are similar, but not homologous.