Genetic Evolution

Question 1

gene duplication

Answer 1

goes hand in hand with animal complexity

mechanisms :
1. unequal (recombination) crossing over (main one)
2. retroposition
3. genome or chromosomal duplication
4. segmental duplication

Question 2

Unequal crossover

Answer 2

mechanims of gene duplication

as a chromosome is dividing, its division is not entirely equal
so you have unequal crossing
making shorter or longer segments
and so, randomly, you can extend part of the chromosome
so genes can sometimes bring with them their regulatory elements

Question 3

retroposition

Answer 3

mechanims of gene duplication