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Biology Help, Please? 3 Multiple Choice Questions? - CoolR - 06-18-2014 08:59 PM
Not very good in this part of biology. These questions can have multiple answers. I put stars next to the answers I think it is.
1.(multiple answers) In Mendel's cross of 2 true-breeding pea plants that differed in two traits - 1 parent plant with round seeds and purple flowers, and the other parent plant with wrinkled seeds and white flowers - what types of gametes can be produced by the parent plant with wrinkled seeds and white flowers? (R = round = dominant trait; P = purple = dominant trait)
a)RP*
b)Rp*
c)rP
d)rp*
e)RRPP
f)rrpp
g)RrPp
2. (multiple answers) In some cats, the gene for black fur (FB) is incompletely dominant with an allele for white fur (FW). The FW allele codes for a protein that can't produce black pigment. What would be the genotype of a cat that is pure black fur?
a)FBFB
b)FWFW
c)FBFW
d)FWFB*
3. (multiple answers) What would be the genotype of the offspring resulting from the mating of a pure black cat with a pure white cat. Assume that the gene for black fur (FB) is incompletely dominant with an allele for white fur (FW).
a)FBFB
b)FBFW*
c)FWFW
d)FW
- Steven - 06-18-2014 09:12 PM
1. F because wrinkled and white are recessive so they must be rrpp (recessive means two lowercase letters or that it needs two little letters for it to be expressed)
2.A, because an FB means black so they would both have to be FB to make it pure black otherwise it would result in a hybrid such as FBFW (it would make it black and white)
3.B since it is two different pure black and white cats being crossed which would result in a hybrid. Hope that helps