Ecologists are sampling mice from different parks in New York City. Most of the mice these
researchers collect demonstrate straight\" tails; however, few mice exhibit \"curly\" tails. In this
scenario, a \"straight tail would be considered the henotype, and a \"curly\" tail would be
considered a phenotype. O heterogametic; homogametic O polymorphism; wild-type O mutant;
wild-type O wild-type; mutant None of the above.
Solution
The answer to your first question is wrong. Most of the researchers find mice with straight tails,
while a few find mice with curly tails. However, this finding does not prove that the curly-tailed
mice are mutants. A mutant phenotype is much rarer than the wild type. The curly phenotype
could simply be a recessive phenotype with a phenotypic frequency lower than that of the
straight phenotype, which might be the dominant trait. Thus, the answer should be \'None of the
above\'.
The answer to the second question is correct. Since the parents\' and the child\'s DNA sequences
differ in only a single nucleotide, it is a point mutation.
The answer to the third question is wrong. Since the flower colour is determined by a gene with
2 alleles, 1 of which is dominant, to get a red colour, the orchid just needs a single dominant
allele. Hence the answer is 1.
Your answer to the fourth question is wrong. The parent and daughter cells may not be
completely identical, and we must take into account the de-novo mutations. Therefore, the
answer should be \'The DNA sequences of the parent and daughter cells were largely similar,
with the exception of any de-novo mutations\'..
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Ecologists are sampling mice from different parks in New York City. M.pdf
1. Ecologists are sampling mice from different parks in New York City. Most of the mice these
researchers collect demonstrate straight" tails; however, few mice exhibit "curly" tails. In this
scenario, a "straight tail would be considered the henotype, and a "curly" tail would be
considered a phenotype. O heterogametic; homogametic O polymorphism; wild-type O mutant;
wild-type O wild-type; mutant None of the above.
Solution
The answer to your first question is wrong. Most of the researchers find mice with straight tails,
while a few find mice with curly tails. However, this finding does not prove that the curly-tailed
mice are mutants. A mutant phenotype is much rarer than the wild type. The curly phenotype
could simply be a recessive phenotype with a phenotypic frequency lower than that of the
straight phenotype, which might be the dominant trait. Thus, the answer should be 'None of the
above'.
The answer to the second question is correct. Since the parents' and the child's DNA sequences
differ in only a single nucleotide, it is a point mutation.
The answer to the third question is wrong. Since the flower colour is determined by a gene with
2 alleles, 1 of which is dominant, to get a red colour, the orchid just needs a single dominant
allele. Hence the answer is 1.
Your answer to the fourth question is wrong. The parent and daughter cells may not be
completely identical, and we must take into account the de-novo mutations. Therefore, the
answer should be 'The DNA sequences of the parent and daughter cells were largely similar,
with the exception of any de-novo mutations'.
