Biology: The Unity and Diversity of Life
15th Edition
ISBN: 9780357093795
Author: STARR
Publisher: CENGAGE LEARNING (CUSTOM)
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Chapter 17, Problem 6SQ
Summary Introduction
Introduction: Sexual selection is a process of selecting mates by an individual. The selection will be according to the physical traits that usually attract the opposite gender. Increased size, coloration, and adornment appearance of the individual help in selecting a mate. Many factors influence the selection of a partner to mate. They include sexual dimorphism, exaggerated traits and male aggression, and so on.
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Students have asked these similar questions
How does sexual selection differ from natural selection?
a. It does not require heritable traits.
b. It determines which individuals get to mate.
c. Variation is not required.
d. It only involves males.
A farmer only breeds cows that produce a lot of milk. This is because the farmer wants more cows that will produce more milk. In this case, who or what is the controlling agent that determines whether certain traits are passed to future generations?
a
the environment
b
the farmer
c
the milk
d
the cows
The fantastic coloration and behavioral displays in the birds of paradise that we watched in class were examples of differential sexual selection driven by:
a.
Female-female combat
b.
Male competition
c.
Female choice
d.
Intrasexual selection
Chapter 17 Solutions
Biology: The Unity and Diversity of Life
Ch. 17 - Prob. 1DAACh. 17 - Prob. 2DAACh. 17 - Prob. 3DAACh. 17 - Prob. 4DAACh. 17 - Prob. 1SQCh. 17 - A neutral mutation _______ . a. has a pH of 7.0 b....Ch. 17 - Change in allele frequency of a population is...Ch. 17 - A wild population of pea plants has two alleles...Ch. 17 - Which of the following is not part of how we...Ch. 17 - Prob. 6SQ
Ch. 17 - The persistence of sickle-cell anemia in a...Ch. 17 - ___ tends to keep populations of a species similar...Ch. 17 - Which is required for a population to evolve? a....Ch. 17 - Prob. 10SQCh. 17 - After fire devastates all of the trees in a wide...Ch. 17 - True or false? Inbreeding can increase the...Ch. 17 - The difference between sympatric and parapatric...Ch. 17 - Prob. 14SQCh. 17 - Match the evolution concepts. ____ gene flow a....Ch. 17 - Species have traditionally been characterized as...Ch. 17 - Rama the cama, a llama-camel hybrid, was born in...Ch. 17 - Two species or antelope, one from Africa, the...Ch. 17 - Prob. 4CTCh. 17 - About 70 percent of flowering plants are...
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- Inbreeding is sexual reproduction between individuals that are a. homozygous. b. heterozygous. c. part of the same genetic lineage. d. both a and c.arrow_forwardDog breeders use selective breeding, also called artificial selection, to maintain a closed genetic lineage, and produce offspring with desirable traits. This violates which Hardy-Weinberg condition? a reproduction b no mutation c random mating d no natural selectionarrow_forwardWhich of the following statements about dominant traits is correct? a. The dominant trait is the one that is expressed. b. They are observed three-fourths as frequently as heterozygous traits. c. They are observed less frequently than recessive traits. d. They increase in frequency over evolutionary time. e. The dominant trait is typically masked by the recessive trait.arrow_forward
- Which of the following assumptions is NOT part of Hardy-Weinberg principle? a. no geneflow b. no mutation c. Allelic frequencies are the same in males and females d. mating is nonrandomarrow_forwardRate of evolution by selection is highest for an allele when it is _________ . a. wild type b. recessive c. dominant d. co-dominantarrow_forwardWhich of the following situations will lead to natural selection? a. The seeds of two plants land near each other and one grows larger than the other. b. Two types of fish eat the same kind of food, and one is better able to gather food than the other. c. Male lions compete for the right to mate with females, with only one possible winner. d. all of the abovearrow_forward
- There is a population of cats and 16% of the cats this population show a recessive trait. a. What is the frequency of the recessive allele? b. What is the frequency of the dominant genotype? c. What is the frequency of cats with the heterozygous genotype?arrow_forwardA set of beliefs and practives that involves the controlled selective breeding of human populations with the hope of improving their heritable qualities, especially through surgical procedures like sterilization and legal rulling that affect marriage rights for interracial couples, is known as: A) non-concordance B) biological determinism C) eugenics D) natural selectionarrow_forwardYou perform an adoption study and you determine that for the trait observed there is a strong genetic effect. This is because you observed _______. A. similarities between the adoptees and their sibblings B. similarities between adoptees and adoptive parents C. similarites between adoptees, biological parents, and adoptive parents D. similarities between adoptees and biological parentsarrow_forward
- Darwin based his Theory of Evolution by Natural Selection on series of observations. Which of the following is not associated with his theory? a) individuals in a population vary phenotypically b) organisms tend to under-reproduce themselves c) there are limited resources for which individuals compete d) some variations possessed by individuals of a population are inheritedarrow_forwardit is believed that the cystic fibrosis (CF) gene conferred protection to carriers during the cholera epidemics of the Middle Ages. The CF gene frequency would be expected to do what in those populations? become sex-linked recessive b. decrease c. stay the same d. increasearrow_forwardWhich of the following is not required for a behavioral trait toevolve by natural selection?(A) In each individual, the form of the behavior is determinedentirely by genes.(B) The behavior varies among individuals.(C) An individual’s reproductive success depends in part onhow the behavior is performed.(D) Some component of the behavior is genetically inherited.arrow_forward
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