Excess Thyroxin-binding Globulin (ETG) is a thyroid disorder that is inherited with the X-linked dominant allele E. The X-linked recessive allele e does not contribute to ETG. Short index finger, where the index finger is shorter than the ring finger, is a sex-influenced autosomal trait that is dominant in males and recessive in females. Let allele S1 be for short index fingers and allele S2 be for long index fingers. The inheritance pattern for this trait is shown in the following table:
Genotype |
Trait for Male Child |
Trait for Female Child |
S1 S1 |
Short Index Fingers |
Short Index Fingers |
S1 S2 |
Short Index Fingers |
Long Index Fingers |
S2 S2 |
Long Index Fingers |
Long Index Fingers |
a. Henry has ETG and long index fingers. His wife Harriet has ETG and short index fingers. Harriet’s father does not have ETG. Out of 4 children born to Henry and Harriet, what is the probability that 3 will be sons with short index fingers who do not have ETG?
b. For Henry and Harriet, what is the probability that their first child will be a daughter with long index fingers who has ETG and their second child will be a son with short index fingers who has ETG and their third child will be a son with short index fingers who does not have ETG?
c. Maurice has short index fingers but does not have ETG. Maurice’s wife Marilyn has long index fingers and ETG. Maurice’s father has long index fingers. Marilyn’s mother has short index fingers and does not have ETG. Out of 3 children born to Maurice and Marilyn, what is the probability that at least one will be a son with ETG and short index fingers?
d. What is the probability that the first child born to Maurice and Marilyn will be either a daughter with long index fingers and no ETG or a son with short index fingers and no ETG?
Excess Thyroxin-binding Globulin (ETG) is a thyroid disorder that is inherited with the X-linked dominant allele...
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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...
1. Polydactyly is a dominant trait with about 63% penetrance. A pregnant woman is heterozygous for the dominant allele, but does not have extra toes or fingers. Her partner does not have polydactyly and is known to be homozygous recessive for the polydactyly gene. What is the probability that their child will be born with polydactyly? 4p
Hemophilia in humans is a recessive sex-linked trait. A man with hemophilia and a woman who does not have hemophilia have a daughter who does not have hemophilia. She then marries a man who does not have hemophilia. What is the probability that their first child will be a daughter with hemophilia? A daughter without hemophilia? A son with hemophilia? A son without hemophilia? If the couple has four sons, what is the probability that all four will be born...
IS ILLUSSIVE in females. Lay the palm of your hand a sheet of paper and line the tip of your ring finger with the edge of the paper. A short index finger will not be longer than the page, but a long index finger will extend beyond the page. enetics problems ou should be able to complete all these types of crosses (using Punnett's squares) for the exam. 1) In corn, the high sugar content (s) is recessive to the...
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...
PROBABILITY 5) In human beings, the absence of molars is inherited as a dominant trait. If two heterozygotes have four children, what is the probability that a.) all will have no molars? b.) three will have no molars and one will have molars? c.) the first two will have molars and the second two will have no molars? 1) Assuming a 1:1 sex ratio, what is the probability that five children produced by the same parents will consist of a.)...
question 5-52 93 Dd D) dd D) aa x aa C) human height E) DI 4.Which of these crosses will only produce heterozygous offspring? B) AA x Aa C) Aa x Aa E) Aa x aa 5. Which of the following human traits is an example of codominance? A) sickle-cell anemia D) AB blood type B) variation in eye color 6. Which of the following is true regarding an individual who has inherited one sickle-cell gene and one normal gene...
Red-green color blindness is a human X-linked recessive disorder. The normal allele, XB, is dominant to the mutant allele, Xb. ill has normal color vision, but her father is color blind. Jill marries Tom, who also has normal color vision. Jill and Tom have a daughter who has Turner syndrome and is color blind How and from whom did the daughter inherit color blindness? O O O O O an ovum carrying X3 followed by fertilization by sperm from a...
Please answer both pages On a separate piece of paper, answer the Genetics Problems allele (a) that is recessive to the ailele for nomal metabolism o following questions. Be sure to SHOW ALL WORK c. If Sally of Sally, her mother, hor father, and her brother humans, the allele for six If both that their frst child will have alkaptonuria? ngers, what is the probabity that their first child wil be 'normar (have five percentage of their children should to...