In humans, the allele for free earlobes (E) is dominant over the allele for attached earlobes...
In humans, the allele for free earlobes (E) is dominant over the allele for attached earlobes (e). The allele for dark hair (D) is dominant over the allele for light hair (d). Given that both parents are heterozygous for earlobe shape and hair color, complete the following:
(3 pts) Determine the genotype for each parent male_________________ X female__________________
(5 pts) Determine the possible gametes each parent can produce and set up a PUNNETT SQUARE. Fill in the PUNNETT SQUARE to determine all the gene combinations that can result when these gametes unite.
(4 pts, 0.5 pt each) COMPLETE THE EMPLY BLANKS:
genotype phenotype probability
EEDD or EEDd or EeDD or EeDd _________________________ ________ out of 16
EEdd or Eedd _________________________ ________ out of 16
eeDD or eeDd _________________________ ________ out of 16
eedd _________________________ ________ out of 16
Homework Answers
EeDd × EeDd
| Gametes | ED | Ed | eD | ed |
| ED | EEDD | EEDd | EeDD | EeDd |
| Ed | EEDd | EEdd | EeDd | Eedd |
| eD | EeDD | EeDd | eeDD | eeDd |
| ed | EeDd | Eedd | eeDd | eedd |
1. E_D_ = 9/16
2. E_dd = 3/16
3. eeD_ = 3/16
4. eedd = 1/16
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In humans, the allele for free earlobes (E) is dominant over the
allele for attached earlobes...
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In humans, free earlobes (E) are dominant to attached earlobes (e) and the presence of freckles (F) is dominant to the absence of freckles (f). If two individual heterozygous for both of these traits were to mate, what is the probability of having a child with attached earlobes and NO freckles? a. 34.9% b. 100% c. 6.25% d. 16.4%
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PPPPPP Step 5: Determine the phenotype of cach possible allele combination shown in the offspring. In this instance, three of the offspring Chose with the genotypes EE, Ee, and Be) have free earlobes, because the free earlobe allele is dominant to the attached-carlobe allele. One offspring, ec, has attached earlobes. Therefore, the proba- bility of having offspring with free earlobes is 3/4 and with attached earlobes is 1/4. Additional Single-Factor Inheritance Problems (One Trait Followed from One Generation to the...
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assume the dominant allele is maternally imprinted. if a
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