Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 42.4, Problem 1CC
Summary Introduction
To analyze:
With regards to the kin selection, an individual should sacrifice to save one sister or 9 cousins.
Introduction:
According to Hamilton, the altruistic gene is favored by the process of natural selection when
rB>C
Here, r is the coefficient of relatedness,
B is the recipient of the benefits, and
C is the cost of the donor.
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Chapter 42 Solutions
Principles of Biology
Ch. 42.1 - Prob. 1CCCh. 42.1 - Prob. 1BCCh. 42.1 - Prob. 2CCCh. 42.1 - Prob. 1TYKCh. 42.1 - Prob. 2TYKCh. 42.1 - Prob. 3TYKCh. 42.2 - Most terrestrial mammals are nocturnal. This means...Ch. 42.3 - Prob. 1CCCh. 42.3 - Prob. 1TYKCh. 42.3 - Prob. 2TYK
Ch. 42.3 - Prob. 3TYKCh. 42.4 - Prob. 1CCCh. 42.4 - Prob. 2CCCh. 42.4 - Prob. 1TYKCh. 42.4 - Prob. 2TYKCh. 42.5 - Prob. 1TYKCh. 42.5 - Prob. 2TYKCh. 42 - Prob. 1TYCh. 42 - Prob. 2TYCh. 42 - Prob. 3TYCh. 42 - Prob. 4TYCh. 42 - Prob. 5TYCh. 42 - Prob. 6TYCh. 42 - Prob. 7TYCh. 42 - Prob. 8TYCh. 42 - Prob. 9TYCh. 42 - Prob. 10TYCh. 42 - Prob. 1CCQCh. 42 - Prob. 2CCQCh. 42 - Prob. 3CCQCh. 42 - Prob. 1CBQCh. 42 - Prob. 2CBQ
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- Salamanders have a male heterogametic system for sex determinations where females are ZZ and males are ZW. The allele for the color of the tail is sex linked and the red allele is found on the W chromosome and the blue allele is found on the Z chromosome. You mate a male and female and they have 3 female offspring. What is the phenotypic ratio for tail color for their offspring? Group of answer choices 2 Blue : 1 Red 0 Blue : 3 Red 1 Blue : 2 red 3 Blue : 0 Redarrow_forwardf you had two guinea pigs of opposite sex, both homozygous, one black and one brown, but you didn't know which was the dominant characteristic, how would you find out the dominant color? Select one: a. Mate them and see what color the offspring are-the other will be the dominant color b. Mate them and see what color the offspring are-that will be the dominant color c. The dominant color could not be determined by mating the two, then mating their offspring; further generations would have to be produced to determine the dominant color d. Mate them together, then mate their offspring to see what color the next generation is-the other color will be the dominant color e. Mate them, then mate their offspring to see what color the next generation is-that will be the dominant colorarrow_forwardA student who has just learned about quantitative genetics says, “Heritability estimates are worthless! They don’t tell you anything about the genes that affect a characteristic. They don’t provide any information about the types of offspring to expect from a cross. Heritability estimates measured in one population can’t be used for other populations, so they don’t even give you any general information about how much of a characteristic is genetically determined. Heritabilities don’t do anything but make undergraduate students sweat during tests.” How would you respond to this statement? Is the student correct? What good are heritabilities, and why do geneticists bother to calculate them?arrow_forward
- As you have read, if an allele is paired with another one just like it, the name for the pair is homozygous. If the allele is paired with a different type, the pair is called heterozygous. You have also learned about how some alleles are domi- nant and some are recessive. A Punnett square shows how the pairs will possi- bly match up. Making a prediction about how the offspring will look is usually simple. If the pair is heterozygous or homozygous dominant, the dominant trait will be expressed. If the pair is homozygous recessive, the recessive trait will be expressed. There are some alleles, however, that behave like normal dominant alleles when in a heterozygous pair, but are deadly in a homozygous pair. For example, the alleles that control fur color in wild mice are yellow and black. The yellow allele is dominant (Y) and the black is recessive (b). When a mating occurs and the alleles are paired together, the hairs have yellow and black bands. From a distance this makes the mouse…arrow_forwardList and describe at least two potential consequences to human health due to the paternal-age effect.arrow_forwardA mating between two heterozygous people with widow's peaks and free earlobes (EeWw) Key: E= free earlobes e = attached earlobes W = widow's peak w = straight hairline 田 EW Ew ew EeWw Eeww eeWw EW EEWW EEWW EeWW EEWW EeWw eeWW eeWw Ew EeWw Eeww eW EeWW ew EeWw еeww Genotypes: Genotype Count eEwW EEWW EEWW eEww Trait Heterozogous free earlobes, Heterozogous widow's peak Homozogous free earlobes, Heterozogous widow's peak Heterozogous free earlobes, Homozogous widow's peak Heterozogous free earlobes, Homozogous straight hairline Homozogous attached earlobes, Heterozogous widow's peak Homozogous free earlobes, Homozogous widow's peak Homozogous free earlobes, Homozogous straight hairline Homozogous attached earlobes, Homozogous widow's peak Homozogous attached earlobes, Homozogous straight hairline Percent 4 25 12.5 12.5 12.5 2 eewW 2 12.5 EEWW 1 6.3 EEww 1 6.3 eewW 1 6.3 eeww 1 6.3 Phenotypes: Phenotype I peE pwW] [pE pwW] [ peE pW] [ peE pw] [ pe pwW] [pE pW] [ pĒ pw] Iрe pW] [ pe pw]…arrow_forward
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