3 Describe chromosomal recombination and how it contributes

3. Describe chromosomal recombination and how it contributes to complex genetic ancestry.

Solution

Answer:

There several mechanisms through which the genetic material on chromosomes may become recombined and contributes to complex genetic ancestry.

Chromosomal crossover (or crossing over) is the exchange of genetic material between homologous chromosomes that results in recombinant chromosomes during sexual reproduction

nonhomologous recombination occur between DNA sequences that contain no sequence homology. Generally occurs in regions where no large-scale sequence similarity is apparent, e.g. translocations between different chromosomes or deletions that remove several genes along a chromosome.

Site-specific recombination between particular short sequences present on otherwise dissimilar parental molecules.