Concepts of Biology
1st Edition
ISBN: 9781938168116
Author: Samantha Fowler, Rebecca Roush, James Wise
Publisher: OpenStax College
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Chapter 11, Problem 3RQ
Which 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 above
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Which of the following is the best description of sexual selection?
a.
Sexual selection is the differential reproductive success due to variation in acquiring immunity from mates.
b.
Sexual selection is the differential reproductive success due to variation in survival from social selection.
c.
Sexual selection is the differential reproductive success due to variation in acquiring mates or mating success.
d.
Sexual selection is the differential survival success due to variation in avoiding mates or mating success.
You are studying a genetically modified mouse that produces electric blue fur, which is not a fur color observed in nature. You notice that females prefer males that have the blue fur when given a choice test for mates. This result supports which of the following models of sexual selection?
a.
Sexual selection for indirect benefits
b.
Sexual selection for direct benefits
c.
Sexual selection for arbitrary traits
d.
None of the above
The good genes model of sexual selection is a popular hypothesis for mate choice. What is an underlying flaw with the hypothesis that must be explained?
Group of answer choices
A. there is no evidence for mate choice in animals
B. sexual selection will remove genetic variation for fitness
C.animals are not capable of a sense of beauty
D. different species have different traits that are important in mate choice
E. all genes confer equal fitness in lab experiments
Chapter 11 Solutions
Concepts of Biology
Ch. 11 - Figure 11.7 Do you think genetic drift would...Ch. 11 - Which scientific concept did Charles Darwin and...Ch. 11 - Which of the following situations will lead to...Ch. 11 - What is the difference between micro- and...Ch. 11 - Population genetics is the study of ________. a....Ch. 11 - Galapagos medium ground finches are found on Santa...Ch. 11 - In which of the following pairs do both...Ch. 11 - The wing of a bird and the arm of a human are...Ch. 11 - The fact that DNA sequences are more similar in...Ch. 11 - Which situation would most likely lead to...
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- Which of the following statements does not support the conclusion that giraffes are k-selected species? a. Giraffes are approximately 6’ tall and weigh 150 lbs at birth. b. Wild giraffes begin mating at 6-7 years of age. c. Newborn giraffes are capable of coordinated walking within an hour of birth, and running within 24 hours of birth. d. Giraffes rarely give birth to twins.arrow_forwardBirds are more likely to form pair-bonds than mammals because … Group of answer choices: A. Bird reproductive physiology makes it easier to judge paternity certainty B. Flight makes it easier to find mates C. Bird species are unable to defend critical resources the way mammals can D. Male mammals have higher levels of testosterone making them more likely to fight E. Either bird parent can sit on the nest or feed chicks while the chicks are too young to flyarrow_forwardThe 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 selectionarrow_forward
- Is sexual selection or natural selection the driver for the differences between males and females? a. In the hollyhock weevil (Rhopalapion longirostre) the females a have much longer rostrum. The length of rostrum is correlated with offspring survival but not mating frequency. b. In the marine iguana species (Amblyrhynchus cristatus) on the islands near Ecuador the males often exceed expected size on a given island. Male size is correlated with survival and number of mating events.arrow_forwardWhich of these situations offers the lowest “opportunity for selection” for males? A. Females choose mates with a fancy ornament. B. Every female chooses one male to mate with for life. C. Locations that females need access to in order to reproduce are rare. D. Males fight each other for access to groups of females.arrow_forwardCourtship rituals are thought to have come about througha. intrasexual selection.b. agonistic behavior.c. intersexual selection.d. kin selection.arrow_forward
- Which of the following traits is more associated with an Opportunistic (Equilibrial) species? Which of the following traits is more associated with an Opportunistic (Equilibrial) species? A. Short maturation time B. Producing offspring at many different times over the course of life C. Producing a lot of eggs at one time D. High juvenile mortality E. High level of parental carearrow_forwardWhy are polyandrous mating systems more rare than polygynous matings? a. Only males are capable of multiple rounds of reproduction within a single breeding season. b. Only females care for the young. c. Females usually experience more intrasexual selection pressure than males. d. Females usually devote more energy to offspring production and development.arrow_forwardIn dioecious plants, males usually produce larger flowers that attract more pollinators than do females. This is an example of a. character displacement b. sexual selection through female choice c. sexual selection through male-male competition d. divergence in resource use e. a cost of reproductionarrow_forward
- This hypothesis suggests that a resulting association of female preference and male display trait can lead to a positive feedback cycle of ever stronger preference and greater display trait. A. Fisher-Zahavi process. B. Fisher's runaway model. C.Good genes process. D.Bateman's principle.arrow_forwardThis hypothesis assumes that among male variation in the expression of ornaments reliably signals individual differences in overall quality of the males. It predicts that choosy females will produce offspring with higher survivorship or in better condition than those of less choosy females. A. Good genes process B. Bateman's principle C. Fisher-Zahavi process D. Fisher's runaway modelarrow_forwardWhich species are examples of intrasexual selection? Please select all correct answers. a. Elk b. Elephant seals c. Widowbirds d. Whiptail lizardsarrow_forward
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