1 Does sexual recombination a produce new alleles b rearrang

1) Does sexual recombination: (a) produce new alleles, (b) re-arrange alleles?
2) Does non-random mating affect: (a) allele frequencies, (b) genotype frequencies?

Solution

1.a. Sexual recombination do not produce new alleles. It just produces new combination of alleles. A new combination of existing genes is produced. Only mutations and gene duplications can produce new alleles.

1.b. Yes. Sexual recombination re arranges alleles. Crossing over of chromosomes can re-arrange alleles.

2.a.Yes. Non-random mating will result in large number of single type of alleles.

2.b.Yes. Non random mating affects the genotype frequency.