Human Biology: Concepts and Current Issues (8th Edition)
8th Edition
ISBN: 9780134042435
Author: Michael D. Johnson
Publisher: PEARSON
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Chapter 19, Problem 12TY
Summary Introduction
Introduction:
Genotype and
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The difference between dominant and recessive traits is …
Group of answer choices:
A.genes for dominant traits are passed on preferentially.
B.effects of recessive traits can be hidden by effects of dominant traits.
C.recessive traits are deleterious (bad for the organism) and dominant traits are not.
D.dominant genes produce proteins, recessive genes do not.
E.dominant traits are more likely to be expressed in males.
Which of the following statements correctly describes a Y-linked trait?
A. It will always be expressed if present in female individuals
B. It can be inherited by a daughter for her father
C. It can be inherited by a son from his mother
D. It will always be expressed if present in male individuals
An individual who is a carrier for a sex-linked trait such as hemophilia
Select one:
A. is always female.
B. is homozygous for the recessive condition.
C. cannot pass the gene on to his or her daughters.
D. shows the dominant phenotype.
Chapter 19 Solutions
Human Biology: Concepts and Current Issues (8th Edition)
Ch. 19 - If you might be a carrier of a gene for an...Ch. 19 - Prob. 2QCCh. 19 - Prob. 1CRCh. 19 - Prob. 2CRCh. 19 -
3. Distinguish between genotype and phenotype.
Ch. 19 - Describe the contributions of Mendel to the field...Ch. 19 - Explain how alterations of chromosome number and...Ch. 19 - Prob. 6CRCh. 19 - Prob. 7CRCh. 19 - Describe what is meant by sex-linked inheritance.
Ch. 19 -
9. Explain why lethal diseases caused by dominant...Ch. 19 - Prob. 10CRCh. 19 - All of the following statements about homologous...Ch. 19 - Prob. 2TYCh. 19 -
3. Which of the following statements correctly...Ch. 19 - Prob. 4TYCh. 19 - Prob. 5TYCh. 19 - Prob. 6TYCh. 19 - Prob. 7TYCh. 19 - Which of the following results in the separation...Ch. 19 - Prob. 9TYCh. 19 - Prob. 10TYCh. 19 - What tool is used to determine the probabilities...Ch. 19 - Prob. 12TYCh. 19 - What is the basis for the tremendous genetic...Ch. 19 - Prob. 14TYCh. 19 -
15. Which of the following events or processes...Ch. 19 -
1. What fraction of the offspring of two...Ch. 19 -
2. Why is it that the range of resting blood...Ch. 19 - Prob. 3AWKCh. 19 - Geneticists often study patterns of gene transfer...Ch. 19 - Prob. 5AWKCh. 19 - Prob. 6AWKCh. 19 - Nondisjunction during meiosis can lead to the...
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- In the context of genetic influence on individual differences, the degree of genetic influence typically a. increases from infancy through childhood, and then decreases from childhood through adulthood. b. decreases from infancy through adulthood. c. remains stable from infancy through adulthood. d. increases from infancy through adulthood.arrow_forwardThe chart below is showing 4 generations of a family that is affected by a hereditary disease. a. Is the disorder being tracked dominant or recessive? How do you know? b. There is only one possible genotype for person C. True or False? c. What are the possible genotypes for person A? d. What are the possible genotypes for person B?, e. If two people with the same genotypes as person C's spouse and person A's spouse had a child, what is the probability that the child will be affected by this genetic disorder? (draw a Punnett square using the correct genotypes to help you). % chance offspring will be affected % chance offspring will not be affectedarrow_forwardWhich of the following statements illustrates codominance? Select one: a. Red flowers crossed with white flowers produce pink flowers. b. Individuals who are heterozygous for the sickle cell anemia allele are more resistant to malaria. c. Two parents with blood types A and B can have children with blood type O. d. Grey heterozygous chickens have black and white feathers.arrow_forward
- ch of the following best describes why males cannot be carriers of sex-linked traits? A. Males cannot be carriers because their Y chromosome makes them immune to sex-linked traits B. This is incorrect, males can be carriers of sex-linked traits O C. Males cannot be carriers because they only inherit one X chromosome, either having the trait or not O D. Males cannot be carriers because their mothers pass on an X chromosome without the sex-linked traitarrow_forwardIn 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 allelearrow_forwardIn humans, there are three alleles for blood type: A, B, and O. A and B are codominant over O. A male with type AB blood and a female with type A blood have a child. The male’s parents both had type AB blood. The female’s mother had type A blood and her father had type B blood. What is the potential phenotype of the child? A. type A (25%), type B (25%), type AB (25%), type O (25%) B. type A (25%), type B (50%), type AB (25%) C. type A (25%), type B (25%), type AB (50%) D. type A (50%), type B (25%), type AB (25%)arrow_forward
- The gene S determines the stripe color of a kind of snake. It has two alleles which are codominant with each other: one allele (S1) causes red stripes, and the other (S2) causes white stripes. What do you predict a heterozygous (S1S2) snake will look like? Select one: a. Assortment of pink, red, and white stripes b. All pink stripes c. No stripes d. Both red and white stripesarrow_forward... Answer and explainarrow_forwardWhen a disease is due to polygenic inheritance, the following is probably true: A. Many factors, both genetic and environmental, contribute to the disease traits. B. It is caused by one gene with a large number of alleles. C. It affects a large number of people. D. It has many different symptomsarrow_forward
- Color blindness is typically an inherited genetic condition in which individuals have a decreased ability to see color or differences in color. Color blindness only occurs in individuals who have two recessive alleles for the condition. Normal color vision is due to a dominant allele (C) Color blindness is due to the recessive allele (c) a) If Susan is homozygous for normal vision, and Matt is homozygous for color blindness, what is the likelihood (in percentage) that their son Alex will have color blindness? Perform a Punnett Square (either below or by hand on paper) to find the probability. Provide your answer in a full sentence. If you did the Punnett Square by hand, attach your photo to the next question.arrow_forwardThe colors of chicken feathers follow a codominant pattern. Both Black (B) and White (W) feathers are dominant phenotypes while checkered (BW) is the heterozygous phenotype. Show a cross between 2 checkered chickens. 1. P1: 2. Punnett Square: 3. Genotype symbols: 4. Genotype in words: 5. Genotypic ratio: 6. Genotypic %: 7. Phenotype symbols: 8. Phenotype in words: 9. Phenotypic ratio: 10. Phenotypic %:arrow_forwardA heterozygous individual is crossed with a homozygous recessive individual. a. Draw a Punnett square to represent this cross. b. What is the probability that an offspring will have a homozygous genotype? c. What is the probability that an offspring will have a dominant phenotype? d. What is the probability that three offspring will be produced that all carry the recessive allele but do not express the recessive phenotype?arrow_forward
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