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Biology 17 Online
zarkam21:

Check

zarkam21:

1 attachment
Vocaloid:

well first off it's the same trait (color) so you should only be using one type of allele (so only use A alleles not b-alleles) assuming black is dominant and white is recessive, the grey sheep/ram should both be Aa (since they have one black allele and one white allele --> grey) so gray sheep = Aa and black ram = AA, show the punnet square between these two

Vocaloid:

A) should be incomplete dominance not co-dominance

zarkam21:

because neither allele is dominant

Vocaloid:

incomplete dominance = produces a blend of the two traits (so black + white --> gray) co-dominance = produces both traits at once (so black + white = a black and white sheep)

Vocaloid:

black is still dominant but it's called incomplete dominance because it doesn't completely mask the recessive white allele

Vocaloid:

still there? it's just a 2x2 cross between Aa * AA

zarkam21:

Yeah lol I'm just writing as I go

zarkam21:

1 attachment
Vocaloid:

only one trait so it just works as a regular 2x2 punnet square |dw:1540276207916:dw|

Vocaloid:

|dw:1540276213364:dw|

Vocaloid:

so each offspring should only have two letter a's

zarkam21:

I thought they were supposed to be the same on the top and left

Vocaloid:

you have a gray sheep and a black ram these don't have the same genotype so one of them is AA and the other is Aa

zarkam21:

okay I got that now for the percentages it would be 2/4 will be black

zarkam21:

and 2/4 will be grey

Vocaloid:

yes as percentages, 50% and 50%

zarkam21:

and whitr as zero

Vocaloid:

yes

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