Principles of Anatomy and Physiology
15th Edition
ISBN: 9781119329398
Author: Gerard J Tortora, Bryan Derrickson
Publisher: John Wiley & Sons Inc
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Textbook Question
Chapter 29, Problem 38CP
What do the terms genotype,
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In genetics, what does a genotype of Hh signify?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
Homozygous; two dominant alleles
(Choice B)
B
Homozygous; two recessive alleles
(Choice C)
C
Heterozygous; one dominant allele and one recessive allele
(Choice D)
D
Homozygous; one dominant allele and one recessive allele
What is the difference between homozygous recessive and homozygous?
Albinism is an autosomal (not sex-linked) recessive trait. A man and woman are both of normal pigmentation and have one child
out of three who is albino (without melanin pigmentation). What are the genotypes of the albino's parents?
One parent must be homozygous for the recessive allele; the other parent can be homozygous dominant, homozygous
recessive, or heterozygous.
Both parents must be homozygous dominant.
One parent must be heterozygous; the other parent can be homozygous dominant, homozygous recessive, or heterozygous.
Both parents must be heterozygous.
One parent must be homozygous dominant; the other parent must be heterozygous.
O000
Chapter 29 Solutions
Principles of Anatomy and Physiology
Ch. 29 - 1. What is pregnancy?
Ch. 29 - 2. What are the major events of each trimester?
Ch. 29 - Prob. 3CPCh. 29 - How is polyspermy prevented?Ch. 29 - Prob. 5CPCh. 29 - Describe the layers of a blastocyst and their...Ch. 29 - Prob. 7CPCh. 29 - 8. What are the functions of the trophoblast?
Ch. 29 - How is the bilaminar embryonic disc formed? ^Ch. 29 - Prob. 10CP
Ch. 29 - Prob. 11CPCh. 29 - When does gastrulation occur?Ch. 29 - Prob. 13CPCh. 29 - Prob. 14CPCh. 29 - Describe how neurulation occurs. Why is it...Ch. 29 - Prob. 16CPCh. 29 - Prob. 17CPCh. 29 - 18. How does the placenta form?
Ch. 29 - Prob. 19CPCh. 29 - Prob. 20CPCh. 29 - What is the origin of the structures of the head...Ch. 29 - Prob. 22CPCh. 29 - What changes occur in the limbs during the second...Ch. 29 - What are the general developmental trends during...Ch. 29 - Prob. 25CPCh. 29 - 26. What are some of the symptoms of fetal alcohol...Ch. 29 - How does cigarette smoking affect embryonic and...Ch. 29 - What conditions can be detected using fetal...Ch. 29 - List the hormones involved in pregnancy, and...Ch. 29 - 30. What structural and functional changes occur...Ch. 29 - 31. Which changes in pregnancy have an effect on...Ch. 29 - Prob. 32CPCh. 29 - Prob. 33CPCh. 29 - What happens during the stage of dilation, the...Ch. 29 - Why are respiratory and cardiovascular adjustments...Ch. 29 - Which hormones contribute to lactation? What is...Ch. 29 - Prob. 37CPCh. 29 - What do the terms genotype, phenotype, dominant,...Ch. 29 - What are genomic imprinting and nondisjunction?Ch. 29 - Give an example of incomplete dominance.Ch. 29 - 41. What is multiple-allele inheritance? Give an...Ch. 29 - Define complex inheritance and give an example.Ch. 29 - 43. Why does X-chromosome inactivation occur?
Ch. 29 - Kathy is breastfeeding her infant and is...Ch. 29 - 2. Jack has hemophilia, which is a sex-linked...Ch. 29 - Alisa has asked her obstetrician to save and...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- What is nondisjunction? Why does it cause chromosomal abnormalities? What is aneulploidy? Trisomy? Monosomy? Which kind of monosomy always results in miscarriage in early pregnancy? What do these terms mean: genotype, phenotype, allele, homozygous, heterozygous? Be able to recognize single gene inheritance patterns [autosomal dominant, autosomal recessive, X linked recessive] from a pedigree. Also, how are simple Mendelian traits transmitted? What genotype produces the phenotype? Why do some inheritance patterns result in many more males than females showing the phenotype? What inheritance patterns do Huntington disease and sickle cell anemia, and hemophilia follow (autosomal dominant or autosomal recessive, or X-linked recessive)? What are some of the symptoms of these diseases?arrow_forwardOne form of the bleeding disorder known as von Willebrand disease is an autosomal recessive disease. A man who is a carrier marries a woman who is also a carrier of the disease. (a) What percentage of their children are likely to have a disease phenotype? (b) What percentage of their children are likely to have a normal phenotype? (c) What percentage of their children are likely to be carriers of the disease?arrow_forwardAlbinism is an autosomal (not sex-linked) recessive trait. A man and woman are both of normal pigmentation and have one child out of three who is albino (without melanin pigmentation). What are the genotypes of the albino's parents? Both parents must be homozygous dominant. Both parents must be heterozygous. One parent must be homozygous dominant; the other parent must be heterozygous. One parent must be heterozygous; the other parent can be homozygous dominant, homozygous recessive, or heterozygous. One parent must be homozygous for the recessive allele; the other parent can be homozygous dominant, homozygous recessive, or heterozygous. O O O O Oarrow_forward
- The allele for hitchhiker’s thumb (h) is recessive to straight thumb (H). If a man and his wife are both homozygous recessive, will any of their offspring potentially have hitchhikers thumb? What is the man’s genotype and the woman’s genotype? What is the man’s phenotype and the woman’s phenotype? What genotype(s) must the offspring have in order to have the phenotypic trait of hitchhiker’s thumb? Do a cross to determine all potential hitchhiker’s thumb genotypes and phenotypes for the offspring of this man and woman. Is it possible for any offspring of the F1 generation to have hitchhiker’s thumb?arrow_forwardWhat is a carrier of a genetic trait?arrow_forwardIn which of the following cases a person can be heterozygous for a particular trait , and expresses both alleles of that trait ? a) sex-linked inheritance c ) incomplete dominance d) recessive inheritancearrow_forward
- A boy with cystic fibrosis (a recessive disorder) is born to a couple who appear to be normal. What are the chance (percent or ratio) that any other children born to this couple will also have cystic fibrosis?arrow_forwardMr. and Mrs. Jones have six children. Three of them have attached earlobes (recessive) like their father, and the other three have free earlobes like their mother. What are the genotypes of Mr. and Mrs. Jones and of their numerous offspring?arrow_forwardIn a multigenerational study of a family, 8% of the males and 8% of the females have red hair. What may be the cause of this? A)Autosomal inheritance B)Environmental influence C)Sex-linked inheritance D)Non-somatic inheritancearrow_forward
- Imagine that a couple is planning to have children. The male is heterozygous for Huntington’s disease and homozygous dominant for Tay-Sachs. The female is homozygous recessive for Huntington’s disease and heterozygous for Tay-Sachs. The couple is curious about the possibility and probability of their offspring inheriting Tay-Sachs and/or Huntington’s. For humans, Huntington’s disease is dominant (H) over the “normal” condition (h), and the “normal” condition is dominant (T) over Tay-Sachs (t). Complete a Punnett square for this cross and record the probabilities for genotypes and phenotypes of the offspring as ratios.arrow_forwardHuntington disease is a rare dominant disorder that causes neurodegeneration later in life. In a homozygous state, the dominant allele is lethal. A man in his thirties, who already has three children, discovers that his mother has Huntington disease though his father is unaffected. What are the following probabilities? a) The man in his thirties will develop Huntington disease. b) His first child will develop Huntington disease. c) Any one out of three of his children will develop Huntington disease.arrow_forwardA WOMAN IS HETEROZYGOUS FOR TWO HARMFUL RECESSIVE ALLELES IN DIFFERENT CHROMOSOMES, ONE FOR PHENYLKETONURIA (PKU) AND THE OTHER FOR CYSTIC FIBROSIS (CF). SHE MARRIES AN UNAFFECTED MAN WHO IS A CARRIER FOR NEITHER DISEASE. IF SHE HAS A DAUGHTER, WHAT IS THE PROBABILITY THAT THE CHILD WILL CARRY NEITHER OF THE RECESSIVE ALLELES? EXACTLY ONE? BOTH?arrow_forward
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