Hybridization

Question 1

Describe hybrid vigour

Answer 1

Occurs due to dominance. Hybrid vigour alleviates inbreeding depression. When two small populations exist, they likely have had some slightly recessive genes get fixed due to drift, the hybrid between the populations will be heterozygotes and will have higher fitness then the parents… F2 will be less fit than F1. Hybrid breakdown is outbreeding depression

Question 2

Go memorize line cross shit

Answer 2

ok

Question 3

Describe hybrid breakdown.

Answer 3

Occurs due to epistasis, more seen in F2+. Well-established different populations of the same species may have evolved specialized genes and traits. When you make a hybrid of them, these genes and traits get mixed up and don’t work as well. Ford parts in a chevy truck

Question 4

Describe transgressive segregation

Answer 4

It is when some of the phenotypes of the F2 are outside of the range of the original parents.