Human Anatomy & Physiology (2nd Edition)
2nd Edition
ISBN: 9780134553511
Author: Erin C. Amerman
Publisher: PEARSON
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Chapter 27, Problem 3AYKA
Summary Introduction
To review:
The probability of a couple having a child with widow’s peak.
Introduction:
A widow’s peak is a V-shaped site seen in the hairline in the middle of the forehead. The growth of hair is observed in the forehead region, which is suppressed in the bilateral pair of the periorbital fields. This trait is known to be genetic.
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Chapter 27 Solutions
Human Anatomy & Physiology (2nd Edition)
Ch. 27.1 - What are the three major periods of prenatal...Ch. 27.1 - 2. When does the postnatal period of life begin?
Ch. 27.2 - Prob. 1QCCh. 27.2 - What are the steps of fertilization?Ch. 27.2 - 3. What is the function of cleavage of the...Ch. 27.2 - How does a morula differ from a blastocyst?Ch. 27.2 - 5. What is the ultimate fate of the inner cell...Ch. 27.2 - 6. Which cell type secretes hCG?
Ch. 27.2 - 7. What are the functions of amniotic fluid?
Ch. 27.2 - 8. What are the main functions of each of the...
Ch. 27.3 - Prob. 1QCCh. 27.3 - 2. Which cells form the three germ layers?
Ch. 27.3 - 3. What are the two types of embryonic folding?...Ch. 27.3 - What is the first major event that occurs during...Ch. 27.3 - Prob. 5QCCh. 27.4 - Prob. 1QCCh. 27.4 - Prob. 2QCCh. 27.4 - What specific changes occur in each month of fetal...Ch. 27.4 - Prob. 4QCCh. 27.5 - Prob. 1QCCh. 27.5 - Prob. 2QCCh. 27.5 - Which hormone stimulates the beginning of...Ch. 27.5 - Prob. 4QCCh. 27.6 - What are the criteria used to determine a newborns...Ch. 27.6 - Prob. 2QCCh. 27.6 - 3. Explain what happens to each structure in the...Ch. 27.6 - Prob. 4QCCh. 27.6 - What role do hormones play in the let-down reflex...Ch. 27.7 - What is the genome? How many chromosomes are in...Ch. 27.7 - Prob. 2QCCh. 27.7 - 3. How does a genotype differ from a phenotype?
Ch. 27.7 - Prob. 4QCCh. 27.7 - Prob. 5QCCh. 27.7 - 6. What is an X-linked disorder? How can a female...Ch. 27 - Match the correct time period of gestation with...Ch. 27 - Prob. 2CYRCh. 27 - Mark the following statements about fertilization...Ch. 27 - Prob. 4CYRCh. 27 - Number the sequence of events in fertilization....Ch. 27 - Prob. 6CYRCh. 27 - Match the extraembryonic membrane with the correct...Ch. 27 - Prob. 8CYRCh. 27 - Match the structures of the embryo with the...Ch. 27 - What are the two types of embryonic folding?Ch. 27 - Prob. 11CYRCh. 27 - Prob. 12CYRCh. 27 - Prob. 13CYRCh. 27 - Prob. 14CYRCh. 27 - Prob. 15CYRCh. 27 - Prob. 16CYRCh. 27 - 17. Fill in the blanks: The first ____________...Ch. 27 - Prob. 18CYRCh. 27 - Prob. 19CYRCh. 27 - Which pattern of inheritance includes examples of...Ch. 27 - Prob. 1CYUCh. 27 - Why is the single-celled zygote approximately the...Ch. 27 - Prob. 3CYUCh. 27 - Prob. 4CYUCh. 27 - Prob. 1AYKACh. 27 - Prob. 2AYKACh. 27 - Prob. 3AYKACh. 27 - Prob. 4AYKACh. 27 - Prob. 5AYKB
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- Please define the following terms: Gene Allele Dominant Recessive Homozygous Heterozygousarrow_forward2 4 points Select the correct mode of inheritance corresponding to this information: Females with AA or Aa genotype are affected, males with AA or Aa are affected, females with aa are unaffected, males with aa are unaffected. Sex-linked recessive. Autosomal recessive. Autosomal dominant. Autosomal dominant, homozygous lethal. 3 4 points There are more chromosomes in one human genome than there are human genes. True False 4 points In a true brooding parental croce for an AD diceace trait the ovnerted proportion of offenring in the Fa generation that are affected ic 3 $ 5 MacBook Air 7arrow_forwardIf both parents are heterozygous for an autosomal trait (Aa), what is the probability that their child will inherit two recessive alleles and have the associated trait? 50 percent 25 percent 100 percent 0 percentarrow_forward
- Cystic Fibrosis is an autosomal recessive disorder. A couple are both carriers of the recessive allele (i.e. they are both heterozygous (Cc) and have the normal wild-type phenotype. What is the probability of the following occurring If they have one child, what is the probability of it having cystic fibrosis (cc)?arrow_forwardAn Autosomal Dominant trait is only evident in the homozygous state. True Falsearrow_forwardIf an individual has no widow's peak, but both parents have widow's peaks, which genotypes are possible for the parents? Heterozygous Homozygous dominant Unable to determine Homozygous recessivearrow_forward
- Differentiate the following. Sex-linked inheritance Sex-limited inheritance Sex-influenced inheritancearrow_forwardSickle cell anemia is inherited as an autosomal recessive condition. It also exhibits incomplete dominance in that the heterozygous genotype displays a mild form of the disease known as sickle cell trait while individuals with the homozygous recessive genotype have a severe form of SCA. A man who has severe sickle cell anemia marries a woman who suffers from a mild trait. What is the probabilitu they will have a child with severe SCA?What is the probability they will have a child with mild SCA? What is the probability they will have a normal child? Show ALL work using punnett squares.arrow_forwardA man with hemophilia (a recessive, sex-linkedcondition) has a daughter without the condition.She marries a man who does not have hemophilia.What is the probability that their daughter willhave hemophilia? Their son? If they have foursons, what is the probability that all will be affected?arrow_forward
- A boy has dimples (dominant trait of autosomal gene D) and is left-handed (recessive trait of autosomal gene H ). Which of these could NOT be the genotype of his MOTHER? dd HH DD hh Dd Hh DD Hharrow_forwardA woman with normal blood clotting mates with a man who has hemophilia. Their first child is a boy who has hemophilia. Tests show that the father and son both have the same form of hemophilia, that it is X-linked recessive, and that the boy has normal genetic inheritance. You can predict that if the couple produces more children together, then the odds are that: Select one: O a. All of the children will have hemophilia. b. Half of the boys and half of the girls will have hemophilia. O C. None of the rest of the children should have hemophilia. O d. Half of the boys and none of the girls will have hemophilia.arrow_forwardIn man, Huntington’s Chorea is autosomal dominant progressive brain disorder and often lethal (H), the individuals usually dying in middle age. Red-green color blindness is recessive and sex-linked (X c ). A double heterozygous woman marries a heterozygous Huntington’s Chorea colorblind man. What are the genotypes of the man and woman? What are the genotypes and phenotypes of the all the remaining offspring after all deaths caused by Huntington’s Chorea? Show COMPLETE cross. TIP: cancel out gametes with Harrow_forward
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