Heredity B/Designer Genes C Question Marathon

[brettt]

AGH! HARDY WEINBERG! ...If it is in equilibrium... of course. .8

Correct; your turn

[billyhoho]

1. What is pangenesis and who proposed it?

2. Is it proven incorrect or correct?

3. What is epistasis?

[Gemma W]

Pangenesis is Darwin's theory of heredity, which included some Lamarkian principles of passing on acquired traits as well as some other funky things. It was therefore disproved, replaced with Mendelian genetics.

Epistasis is when one gene's expression is modified by the presence of another gene.

[rtunnel97]

its been awhile so i thought i would post, what is the difference between co dominance and incomplete dominance?

[Gemma W]

Codominance is when both phenotypes manifest together, such as with the black and white chickens or AB blood type, whereas incomplete dominance is when the two alleles modify each other causing a new phenotype, as with pink four-o-clock flowers.

[rtunnel97]

thats correct, your turn!

[Gemma W]

What's the difference between purines and pyramidines in terms of chemical structure & which is which?

[doge]

Adenine and guanine are purines which have 2 rings and 4 atoms of nitrogen.
Cytosine, thymine, and uracil are pyrimidines which have 1 ring and 2 atoms of nitrogen.

[Gemma W]

Right. Your turn

[SWAnG]

It's been a while since a question's been asked, so I thought I'd just ask a question! What is the purpose and special property of Taq polymerase in PCR?