Question

Certain genes segregate as if they were _____ or ______; this is because they are part of the same chromosome. The alleles at all loci of one chromosome should be transmitted as a unit during gamete formation.

Answer 1

Linked genes on the same chromosome tend to segregate together during meiosis, unless separated by crossing-over. Genes that are physically close to each other on the same chromosome are more likely to be inherited as a pair.

Step-by-step explanation:

When two genes are located on the same chromosome, they are considered linked, and their alleles tend to be transmitted through meiosis together. For example, if we have a dihybrid cross involving flower color and plant height, and the genes for these traits are next to each other on the chromosome, the alleles for tall plants and red flowers will tend to go together into a gamete, while the alleles for short plants and yellow flowers will go into other gametes. This is because the genes are physically close to each other on the same chromosome. As the distance between two linked genes increases, the likelihood of a crossover event between them increases, and the genes behave more like they are on separate chromosomes. So, genes on the same chromosome segregate together unless they are separated by crossing-over.