11 and 12 seem to be right :) For 13, only organisms which are homozygotic for a certain gene (aa) express a recessive phenotype.
14. This dna exchange between the homologous chromosomes is called crossing-over.
15. geneticly linked or coupled, the phenomenon is known as genetic linkage
16. and 17. also seem all right :)
Gene differences are so important among the population because they the distinctivnes of people
Answer:
The answer is between a or b
but I strongly suggest the option a.
Evolution is the answer
Meiosis is the cell replication of gametes (sex cells).
I believe it is resources
