Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN: 9781305251052
Author: Michael Cummings
Publisher: Cengage Learning
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Chapter 5, Problem 16QP
Why are monozygotic twins who are reared apart so useful in the calculation of heritability?
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Chapter 5 Solutions
Human Heredity: Principles and Issues (MindTap Course List)
Ch. 5.5 - Prob. 1GRCh. 5.5 - What are the possible advantages or disadvantages...Ch. 5 - After hearing this information, should Sue and Tim...Ch. 5 - Can cleft lip be surgically corrected? Sue and Tim...Ch. 5 - If the child showed a cleft lip through ultrasound...Ch. 5 - Describe why continuous variation is common in...Ch. 5 - The text outlines some of the problems Frederick...Ch. 5 - What role might environment have played in causing...Ch. 5 - Do you think Frederick Williams experiment would...Ch. 5 - As it turned out, one of the tallest Potsdam...
Ch. 5 - Describe why there is a fundamental difference...Ch. 5 - Sunflowers with flowers 10 cm in diameter are...Ch. 5 - Clubfoot is a common congenital birth defect. This...Ch. 5 - Define genetic variance.Ch. 5 - Define environmental variance.Ch. 5 - How is heritability related to genetic and...Ch. 5 - Why are relatives used in the calculation of...Ch. 5 - If there is no genetic variation within a...Ch. 5 - Can conjoined (Siamese) twins be dizygotic twins...Ch. 5 - Dizygotic twins: a. are as closely related as...Ch. 5 - Why are monozygotic twins who are reared apart so...Ch. 5 - Monozygotic (MZ) twins have a concordance value of...Ch. 5 - If monozygotic twins show complete concordance for...Ch. 5 - Researchers set up an obesity study in which MZ...Ch. 5 - What does the ob gene code for? How does it work?...Ch. 5 - What is the importance of the comparison of traits...Ch. 5 - Height in humans is controlled by the additive...Ch. 5 - If diseases such as cardiovascular disease...Ch. 5 - Prob. 24QPCh. 5 - Prob. 25QPCh. 5 - Suppose that a team of researchers analyzes the...
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- What is the importance of the comparison of traits between adopted and natural children in determining heritability?arrow_forwardWhy are relatives used in the calculation of heritability?arrow_forwardIf monozygotic twins show complete concordance for a trait, whether they are reared together or apart, what does this suggest about the heritability of the trait?arrow_forward
- How is heritability related to genetic and environmental variance?arrow_forwardWhich of the following is used to identify the chromosomal region(s) associated with a continuous trait? a) Narrow-sense heritability b) Twin studies O c) Correlation coefficient O d) QTL mappingarrow_forwardThe graphs below show antibiotic production from the same population of bacteria, grown in two different environments-high glucose and low glucose. Number of organisms HIGH GLUCOSE LOW GLUCOSE Amount of antibiotic produced If you calculate the heritability of antibiotic production for this population of bacteria when grown in low glucose compared to when it is grown in high glucose, the estimated heritability value Incorrect will be smaller in the low glucose than in the high glucose. will not be possible to estimate because you don't know the genotypic variation. will be larger in the low glucose than in the high glucose. will be the same in both environments. X Xarrow_forward
- What are the possible phenotypic (P) and genotypic (G) ratios if you cross two parents who are carriers of dominant traits following Mendelian laws of heredity? P: 2:1; G: 3:1 P: 1:2:1; G: 1:3 P: 3:1; G: 1:2:1 P: 3:1; G: 2:1:1arrow_forwardWhat is the expected F1 phenotypic ratio resulting from a dihybrid cross between two parental pea plants that are both heterozygous for peas that are yellow and round (YyRr)? 1:1:1:1 1:1 3:1:3:1 3:1 9:3:3:1arrow_forwardWhat kind of heritability estimates (broad sense or narrow sense) are obtained from human twin studies?arrow_forward
- There are two types of alleles: Type B1 and Type B2 (In total there are 10) Type B1 has 6 Type B2 has 4 Question: What is the probability of an individual in the offspring generation being homozygous [p^2] for B1? What is the probability of an individual in the offspring generation being homozygous [q^2] for B2? What is the probability of an individual in the offspring gen being heterozygous[2pq]?arrow_forwardWhat are the genotypes and phenotypes for Mendel’s true-breeding parent plants?arrow_forwardFor each of the following pairs of parental genotypes, calculate the phenotypic ratios for the F1 generation.arrow_forward
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