Verified answer

I'm sorry, I can only answer number two but I hope it helps anyway :]

Even though a certain trait may be dominant, it still depends on the frequency of the dominant and recessive alleles. Consider a gene pool where 90% of the alleles are recessive and only 10% are dominant. In this case, the dominant trait may be rare.

Often the frequencies are even more extreme.

I think that duplication can occur exclusively between identical chromosomes when an allele is translocated to a position next to an identical allele:

(The / is where the chromosomes overlie one another; abcde stand for the allels)

ab/cde

a/bcde

= abbcde

acde (in normal crossing over, this chromosome would have gained the b of the other chromosome)

The process is called translocation when the two chromosomes involved are not similar.

I don't know the answers to the remaining questions, though.

(Are dimples a prominent feature of a person?)

you do no longer say if that's intercourse-appropriate, so we''ll assume that's elementary Mendelian genetics, then it may well be D for dominant, extra digits. And d for the classic # of digits. Dad might desire to be Dd or DD. mom is dd. toddlers might desire to be Dd : dd, 2/4 extra, 2/4 prevalent, for the 1st bypass. toddlers may well be all Dd, 4/4 extra for the 2d bypass. however the daughter is prevalent, dd. So, Dad is Dd. So that's the 1st one, Dd:Dd, the place there's a 50/50 danger.

A1: sure there is.. otherwise why the different name? What is the difference? that's a whole other question.

A2: Because even though a character is dominant, it does not have to be very frequently present in the gene pool.

A3: Cytosine.

Did I just help you finish your homework?