For a male and female bison that are both heterozygous for normal skin pigmentation to produce an albino offspring....
1. What are genotype of parents (A= normal skin, a=albino)
AA x AA
Aa x Aa *
aa x aa
2. what are possible genotypes of offspring?
Aa only
AA and aa
AA and Aa
AA, Aa, aa *
3. What percentage of offspring wit have phenotype of normal skin color?
0%
25%
75% *
4. Is it possible for parents to have albino offspring?
Yes *
No
I feel like all of my answers are wrong, please help. Thank you!
No, all of your answers are correct!
It appears that there is confusion in your answers. Let's go through each question and clarify them one by one:
1. What are the genotypes of the parents (A= normal skin, a= albino)?
To produce an albino offspring, both parents need to carry the albino allele (a). Therefore, for the parents to be heterozygous for normal skin pigmentation, their genotypes should be Aa x Aa, as marked with an asterisk (*).
2. What are the possible genotypes of the offspring?
Given that the parents are both heterozygous (Aa x Aa), there are three possible genotypes for the offspring: AA, Aa, and aa. Therefore, the correct answer is all three genotypes: AA, Aa, and aa, marked with an asterisk (*).
3. What percentage of offspring will have the phenotype of normal skin color?
To determine the percentage of offspring with normal skin color, we need to consider the genotypes. From the previous question, we found that the possible genotypes are AA, Aa, and aa. Among these genotypes, only AA and Aa represent normal skin color (A). The percentage of offspring with normal skin color can be calculated by adding the probabilities of AA and Aa. Considering that both AA and Aa genotypes represent normal skin color, the correct answer is 75%, marked with an asterisk (*).
4. Is it possible for the parents to have albino offspring?
To have an albino offspring, both parents need to carry the albino allele (a). In the given scenario, both parents are heterozygous (Aa x Aa), meaning they carry one copy of the albino allele, which can be passed to their offspring. Therefore, it is indeed possible for the parents to have an albino offspring. Your initial answer of "Yes" is correct.
To summarize, the correct answers are:
1. Aa x Aa *
2. AA, Aa, and aa *
3. 75% *
4. Yes *
1. The genotype of the parents is Aa x Aa. Both parents are heterozygous (Aa) for normal skin pigmentation.
2. The possible genotypes of the offspring are AA, Aa, and aa. This means that the offspring can be homozygous dominant (AA), heterozygous (Aa), or homozygous recessive (aa) for skin pigmentation.
3. Since the parents are both heterozygous (Aa), there is a 75% chance that the offspring will have the phenotype of normal skin color (either AA or Aa). This is because both AA and Aa genotypes have normal skin pigmentation.
4. Yes, it is possible for the parents to have an albino offspring. This is because both parents carry the albino allele (a) in their genotype, even though they themselves have normal skin pigmentation. When both parents pass on the recessive allele (a) to their offspring, the offspring will be homozygous recessive (aa) for skin pigmentation and will display the albino phenotype.