Homework Answers
a)
SS, ss
b)
There are total 4 possible outcomes of gene alleles viz. SS, Ss,
Ss, ss
Probability = 1/4 = 0.25
The probability is 0.25. This means there is a 25% chance that a randomly selected offspring will have sickle cell anemia.
c)
There are 2 possible combinations.
Probability = 2/4 = 0.5
The probability is 0.5. This means there is 50% chance.
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Hemoglobin genotype
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A+
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chromosomes
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Table 2. Results of blood and hemoglobin tests for case
study.
Subject
Blood type (phenotype)
Hemoglobin genotype
Mother
A+
HbAS
Baby
A+
HbAA
Male Subject
O-
HbAS
Based on your results shown in Table 2, can you exclude the
possibility of paternity? Cite the specific results
that allow you to make this claim
What are ALL of the potential genotypes for each subject based
on blood type?
Define the difference between genotype and phenotype.
Supplementary Information A gene is a...
Circle the correct answer, there may be more than one correct answer 1. Diploid Organisms: a) typically have 23 pairs of chromosomes b) are heterozygous for a trait when they carry different alleles c) carry 2 copies of chromosomes d) are homozygous for a trait when they carry different alleles 2. Why are garden peas a good subject for Mendel's experiments? a) garden peas had either or traits b) garden pess could self-pollinate to produce offspring of the same variety...
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...
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...
A mutation in one of the hemoglobin genes causes sickle cell anemia. The sickle cell allele, S, severely reduces fitness in people who are homozygotes, SS. In contrast, people with at least one normal hemoglobin allele, A, do not suffer the effects of sickle cell anemia, even if the individual is a heterozygote, AS. Interestingly, in areas with high rates of malaria, a single Sallele confers some resistance to malarial infection. Suppose there is a population with the observed and...
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