WHAT IS LIFE? ACHIEVE 1 TERM ACCESS CODE
5th Edition
ISBN: 9781319516116
Author: PHELAN
Publisher: MAC HIGHER
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Chapter 9, Problem 10SA
Summary Introduction
To analyze:
How the case of PKU supports the notion that our
Introduction:
An individual's surroundings can cause significantly effects on the body.
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WHAT IS LIFE? ACHIEVE 1 TERM ACCESS CODE
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- Which of the following is an example of how genotype and environmental factors can work together to determine phenotype? O a) Temperature-senitive mutations O b) Nutritional factors resulting in epigenetic modification of genes c) Sex-influenced inheritance O d) Both A and B O e) Both A and Carrow_forwardIs it possible to determine the genotype of an individual having a dominant phenotype? How?arrow_forwardAt which level is incomplete dominance more likely to beobserved—at the molecular/cellular level or at the organism level?arrow_forward
- What is meant by the genetic conflict hypothesis?arrow_forwardIn the hybridization of 2genes (4 different alleles, 2 ofeach pair) how does epistasisaffect the proportion ofphenotypical forms in the F2generation?arrow_forwardWhy are the concepts of variable expressivity, incomplete penetrance, and delayed age of onset so important in relation to genetic diseases?arrow_forward
- A mutation in a primary determinant does not cause a phenotype in every individual who gets the mutant allele. However, the individuals who display the mutant phenotype always display the same phenotype. This is an example of which genetic phenomenon? A) incomplete dominance B) haploinsufficiency C) variable expressivity D) incomplete penetrancearrow_forwardGiven these parents-note, they are NOT quite the same as each other!: mom = Aa Bb Cc Dd dad = Aa Bb cc Dd NOTE that the A gene acts incompletely dominantly. a) What chance does their baby having the "strongest phenotype" in A, being recessive in b, recessive in c, and dominant in D? Give one fraction. Show work. b) phenotype? Now assume mom was CC instead of Cc. Now what is the chance of having that samearrow_forwardIn fruit flies, eye color is an X-linked trait. Red eyes (XB) are dominant to maroon eyes (Xb). A male with red eyes mates with a female with maroon eyes. What will be the eye color of the flies in the F1 generation? A) Males: Maroon, Females: Red B) Males: Maroon, Females: Maroon C) Males: Red, Females: Maroon D) Males: Red, Females: Red E) Males: Maroon, Females: Red or Maroonarrow_forward
- For an X-linked recessive disease, if an affected male is crossed with an unaffected female who is homozygous for the wild-type allele at the disease gene, then the percentage of male offspring that will be unaffected is: a) 0% b) 50% c) 100% d) 25% e) 33%arrow_forwardIn Huntington’s disease, the wild-type allele, h, is recessive to the disease allele, H. The persistence of an autosomal dominant allele that is fatal in 100% of cases is best explained by which of the following? A) The dominant allele only has moderate negative effects during adolescence and young adulthood. B) The wild-type h allele continues to spontaneously mutate into the dominant H allele. C) The persistence of any given allele in nature is determined almost wholly by chance. D) The disease has no effects until the individual has reached an age far past the normal age for reproduction.arrow_forwardIf a single expressed gene can affect multiple traits at once, what would be the most precise manner of referring to this phenomenon? a) Polygenic. b) Monogenic. c) Pleiotropic. d) Polytropic.arrow_forward
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