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 best describe the equation P = G + E + (G X E)?*
a. The phenotype is the sum of the genotype and the environment.
b. The phenotype of an organism is determined by its genetic traits.
c. The phenotype is the total characteristics displayed by an organism that results from the expression of the genes as well as the influence of environmental factors.
d. The phenotype is the observable and measurable characteristics of an organism as a result of the interaction of the genes of the organism, environmental factors, and random variation.
A gene for a particular trait that is expressed when two copies (homozygous) or just one copy of the same allele are present (heterozygous), is called a(n):
A. Dominant trait.
B. Codominant trait.
C. Incompletely dominant trait.
D. Recessive trait.
E. Multiple allele.
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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- Many inherited disorders in humans are controlled by a single allele with two genes Select one: a. False b. Truearrow_forwardWhich 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 individualsarrow_forwardAn 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.arrow_forward
- 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_forwardConsider the following human traits: Eye color: brown (B) is dominant over blue (b)Fingers: polydactylous (P) or extra fingers is dominant over normal (p) fingersHairline: widows peak (W) is dominant of normal (w) hairline A man with the genotype BBPpWW marries a woman with the genotype bbPpWw.What is the probability that they will have a: a. Baby boy? b. Child with blue eyes? c. Child with normal fingers? d. Child with widow’s peak?e. Baby girl with blue eyes? f. Baby boy with normal fingers?g. brown-eyed, polydactylous child?arrow_forwardWhich of the following is false? a. the pollen grain shape was studied by Mendel. b. Mendel believed that the characteristics of pea plants were determined by the inheritance units or factors from both parents. c. An allele is one of several possible forms of a gene. d. When the genotype consists of a dominant and recessive allele, the phenotype will be like the dominant allele.arrow_forward
- Alleles that show incomplete dominance will represent: Choose oneAnswer: A . heterozygotes that have a phenotype intermediate between the dominant and recessive alleles. B. homozygotes that have a genotype like the recessive allele C. homozygotes that have a phenotype intermediate between the dominant and recessive alleles. D. heterozygotes that have a genotype like the dominant allelearrow_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_forward. Assuming no involvement of the Bombay phenotype(in case you’ve already read ahead to Section 3.2):a. If a girl has blood type O, what could be the genotypes and corresponding phenotypes of her parents?b. If a girl has blood type B and her mother has bloodtype A, what genotype(s) and correspondingphenotype(s) could the other parent have?c. If a girl has blood type AB and her mother is alsoAB, what are the genotype(s) and correspondingphenotype(s) of any male who could not be thegirl’s father?arrow_forward
- Consider the following human traits: Eye color: brown (B) is dominant over blue (b)Fingers: polydactylous (P) or extra fingers is dominant over normal (p) fingersHairline: widows peak (W) is dominant of normal (w) hairline a. What is the phenotype of a man heterozygous for eye color?b. What is the genotype of a man with blue eyes?c. What is the phenotype of a woman heterozygous for finger trait?d. What is the genotype of a woman with normal hairline?e. What is the COMPLETE genotype of a man with blue eyes, heterozygous for polydactyly, and has a normal hairline?f. What is the COMPLETE genotype of a woman heterozygous for brown eyes, has normal fingers, and homozygous for widow’s peak?arrow_forwardwhich of the following would not be a sex-linked trait? (choose one answer only) A. tortoise shell cat (fur) B. brown eyes vs. blue eyes in humans C. red eye vs. white eye in fruit flies D. red green colorblindness E. hemophilia vs. normal blood clottingarrow_forward. Which of the following terms applies to traits, such as human eye color, that are controlled by more than one gene? A. Codominant B. Polygenic C. Recessive D. Sex-linkedarrow_forward
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