Assume earlobe shape is controlled by a single gene with two alleles. The dominant allele generates...
Assume earlobe shape is controlled by a single gene with two alleles. The dominant allele generates free earlobes, while the recessive allele produces attached earlobes. A second gene on a different chromosome controls earwax consistency, where wet is dominant and dry is recessive. Bella has free earlobes with wet earwax and is heterozygous for both traits. Edward has attached earlobes with dry earwax. What is the probability that their first child will have either free earlobes or wet earwax or both dominant traits?
Homework Answers
Earlobe shape: free earlobe (E) is dominant and attached earlobe (e) is recessive
Earwax consistency: wet (W) dominant and dry (w) is recessive
Parents: Bella ×. Edward
Phenotype: free earlobe with wet earwax. Attached earlobe with dry earwax
Genotype: EeWw. eeww
Gamete:. EW/Ew/eW/ew ew
| Gamete | ew (father) |
| EW (mother) |
EeWw Free earlobe - wet (25%) |
| Ew (mother) |
Eeww Free earlobe- dry (25%) |
| eW (mother) |
eeWw Attached earlobe- wet (25%) |
| ew (mother) |
eeww Attached earlobe- dry (25%) |
Free earlobe child: 50%
Wet ear wax: 50%
Free earlobe with wet earwax child: 25%
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Assume earlobe shape is controlled by a single gene with two
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Match the following terms with the appropriate description below: a. alleles b. autosomes c. dominant allele...
Match the following terms with the appropriate description
below:
a. alleles b. autosomes c. dominant allele d. genotype e.
heterozygous f. homozygote g. phenotype h. recessive allele i. sex
chromosomes
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Match the following terms with the appropriate description
below:
a. alleles b. autosomes c. dominant allele d. genotype e.
heterozygous f. homozygote g. phenotype h. recessive allele i. sex
chromosomes
1. ________________ genetic make-up
2. ________________ how genetic make-up is expressed
3. ________________ chromosomes that dictate most body
characteristics
4. ________________ alternative forms of the same gene
5. ___________an individual bearing two alleles that are the same
for a particular trait 6. ________________ an allele that is
expressed, whether in...
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Please help me understand. My thoughts are A and F,
but that is an incomplete answer.
Last week you were wondering what Jessica and Tom's babies might look like with respect to their eyebrows and earlobes (both Tom and Jessica have thick eyebrows, controlled by gene E, with thick eyebrows dominant to thin eyebrows and both of them have free earlobes, controlled by gene F, with free earlobes dominant to attached earlobesi You know that Tom's mom has attached earlobes....
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