BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
3rd Edition
ISBN: 9781260670929
Author: Hoefnagels
Publisher: MCG CUSTOM
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Chapter 10, Problem 6MCQ
Summary Introduction
Introduction:
A sex-linked recessive gene is present on the X and Y chromosome. X-linked recessive diseases most often occur in males. Male has only one X chromosome. A single recessive gene on the X chromosome will cause the disease.
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Hemophilia is a disease caused by a gene found on the X
chromosome. Therefore, it is referred to as a sex-linked disease.
The recessive allele causes the disease. A man with hemophilia
(xhy) marries a woman who is homozygous dominant (XHXH.
A. Illustrate using a Punnett square the probability that their children
will have the disease.
B. Will any of their children have the disease?
C. Predict the probabilities of their children having the disease.
A boy is color-blind (X-linked recessive) and has a straight hairline (autosomal recessive). Which could be the genotype of his mother?
Select one:
А. Вbxwxw
B. Bbww
C. Xbxbww
D. Xbyww
Hemophilia is a disease caused by a gene found on the X chromosome. Therefore, it is a sex-linked disease which is caused by the recessive allele. Suppose, a man with hemophilia marries a woman who is homozygous dominant for the trait. Predict the genotype of the man. (XH = normal; Xh= hemophiliac) *
a. XH Y
b. XHXh
c. XhXh
d. Xh Y
Chapter 10 Solutions
BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
Ch. 10.1 - How are chromosomes, DNA, genes, and alleles...Ch. 10.1 - Prob. 2MCCh. 10.2 - Why did Gregor Mendel choose pea plants as his...Ch. 10.2 - Distinguish between dominant and recessive;...Ch. 10.3 - Prob. 1MCCh. 10.3 - How are Punnett squares helpful in following the...Ch. 10.3 - Prob. 3MCCh. 10.3 - Prob. 4MCCh. 10.4 - What is a dihybrid cross, and what is the...Ch. 10.4 - Prob. 2MC
Ch. 10.4 - Prob. 3MCCh. 10.5 - How do the patterns of inheritance differ for...Ch. 10.5 - What is the difference between recombinant and...Ch. 10.5 - Prob. 3MCCh. 10.6 - Prob. 1MCCh. 10.6 - What is pleiotropy?Ch. 10.6 - Prob. 3MCCh. 10.6 - Prob. 4MCCh. 10.7 - Prob. 1MCCh. 10.7 - Prob. 2MCCh. 10.7 - Prob. 3MCCh. 10.8 - How are pedigrees helpful in determining a...Ch. 10.8 - Prob. 2MCCh. 10.9 - Prob. 1MCCh. 10.9 - Prob. 2MCCh. 10 - In the list of four terms below, which term is the...Ch. 10 - Prob. 2MCQCh. 10 - Prob. 3MCQCh. 10 - Prob. 4MCQCh. 10 - Prob. 5MCQCh. 10 - Prob. 6MCQCh. 10 - Prob. 1WIOCh. 10 - List three genes mentioned in this chapter or not...Ch. 10 - Prob. 3WIOCh. 10 - Prob. 4WIOCh. 10 - Prob. 5WIOCh. 10 - Explain how each of the following appears to...Ch. 10 - Prob. 8WIOCh. 10 - Calico cats have large patches of orange and...Ch. 10 - Prob. 10WIOCh. 10 - Review Burning Question 10.10, which describes the...Ch. 10 - Prob. 1PITCh. 10 - Analyze the concept map and then explain the...Ch. 10 - Add meiosis, gametes, mutations, incomplete...Ch. 10 - In rose bushes, red flowers FF or Ff are dominant...Ch. 10 - In Mexican hairless dogs, a dominant allele...Ch. 10 - Prob. 3GPCh. 10 - Two lizards have green skin and large dewlaps...Ch. 10 - A fern with a genotype AA Bb Cc dd Ee mates with...Ch. 10 - In Fraggles, males are genotype XY and females are...
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- A male affected with an X-linked dominant trait will have what proportion of offspring affected with the trait? a. 1/2 sons and 1/2 daughtersb. All sons and no daughtersc. All daughters and no sonsd. 3/4 daughters and 1/4 sonsarrow_forwardA woman is a carrier for the color-blindness gene, found on the X chromosome. She does not have color blindness, however. What are the chances that her female child will also inherit this gene? a. no chance (0%) b. 1 in 4 chance (25%) c. 2 in 4 chance (50%) d. 100% chancearrow_forwardA couple wish to have children, but the father has an X-linkedrecessive trait. Assuming that the mother does not carry thetrait, what percentage of their sons may inherit the trait?a. 0% d. 75%b. 25% e. 100%c. 50%arrow_forward
- Baldness is a phenomenon where individuals lose hair as they grow older. As an X-linked recessive gene, what instances do females manifest this trait? a. heterozygous recessive b. heterozygous dominant c. homozygous recessive d. homozygous dominantarrow_forwardA mother who is heterozygous for an X-linked recessive trait haschildren with a man who has the trait. What percentage of theirdaughters will exhibit the trait?a. 0% d. 75%b. 25% e. 100%c. 50%arrow_forwardA man who is color-blind marries and has children by a woman who has normal color vision. The woman’s father had normal color vision but her mother was color-blind. Color-blindness is an X-linked recessive disorder. What are the chances that this man and woman will give birth to a color-blind girl (restated: of all the possible children, how many would be female and color-blind)? a. None b. 25% c. 50% d. 75% e. 100%arrow_forward
- Color blindness is an x-linked recessive disorder. A woman who is a carrier for color blindness has children with a man who is color blind. Determine the probability that their child will be color blind. a. 0 % b. 25% c. 50% d. 100%arrow_forwardHemophilia is a disease caused by a gene found on the X chromosome. Therefore, it is a sex-linked disease which is caused by the recessive allele. Suppose, a man with hemophilia marries a woman who is homozygous dominant for the trait, what is the chance of having children who are hemophiliacs? (XH = normal; Xh= hemophiliac) * a. 0% b. 75% c. 100% d. 25%arrow_forwardWhich statement about the pattern of inheritance for a recessive X-linked allele is true? A. Unaffected parents can produce daughters who are affected. B. Unaffected parents can have sons who are affected and daughters who are carriers. C. Unaffected fathers can be carriers. D. Affected parents do not produce affected children. E. Every affected person has an affected parent.arrow_forward
- Phenylketonuria (PKU) is a disease that results from a recessive gene.Suppose that two unaffected parents produce a child with PKU. a. What is the probability that a sperm from the father will contain the PKU allele?b. What is the probability that an egg from the mother will contain the PKU allele?c. What is the probability that their next child will have PKU?d. What is the probability that their next child will be heterozygous for the PKU gene?arrow_forwardPhenylketonuria (PKU) is a disease that results from a recessive gene. Suppose that two unaffected parents produce a child with PKU. a. What is the probability that a sperm from the father will contain the PKU allele? b. What is the probability that an egg from the mother will contain the PKU allele? c. What is the probability that their next child will have PKU? d. What is the probability that their next child will be heterozygous for the PKU gene?arrow_forwardIf two parents are heterozygous for a genetically inherited dominant trait, what is the probability that they will have a child together who has this trait in his or her phenotype? a. 25% b. 50% c. 75% d. 100%arrow_forward
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