In most species containing individuals that are either male or female, the proportion of males and females changes over time. This graph shows shifting male female ratios in a wasp population over 10years. Based on the data shown in the graph, select the statements that describe what happens whenever one sex becomes rare or common Percent male or female 100% 80% 60%- 40% 20% 0 Proportion of male and female wasps in a population over a 10-year period 1 2 3 4 5 6 7 Year Males ● Females 8 9 10 When one sex becomes either more rare or more common, parents produce an equal number of sons and daughters. The sex ratio returns to an equal number of males and females. When one sex becomes rare, the other sex becomes common due to random fluctuations in the production of male and female offspring. The fitness of the parents is not affected. When one sex becomes rare, parents producing that sex have higher fitness due to a higher probability of mating success in their offspring. The rare sex becomes more common. O When one sex becomes common, parents producing that sex have reduced fitness due to a lower probability of mating success in their offspring. The common sex becomes rarer.

Human Anatomy & Physiology (11th Edition)
11th Edition
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Author:Elaine N. Marieb, Katja N. Hoehn
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In most species containing individuals that are either male or female, the proportion of males and
females changes over time.
This graph shows shifting male female ratios in a wasp population over 10years.
Based on the data shown in the graph, select the statements that describe what happens whenever
one sex becomes rare or common
Percent male or female
100%
80%
60%-
40%
20%
0
Proportion of male and female wasps in a
population over a 10-year period
1
2
3
4
5 6 7
Year
Males • Females
8 9 10
When one sex becomes either more rare or more common, parents produce an equal number of sons and
daughters. The sex ratio returns to an equal number of males and females.
When one sex becomes rare, the other sex becomes common due to random fluctuations in the production of
male and female offspring. The fitness of the parents is not affected.
When one sex becomes rare, parents producing that sex have higher fitness due to a higher probability of
mating success in their offspring. The rare sex becomes more common.
O When one sex becomes common, parents producing that sex have reduced fitness due to a lower probability
of mating success in their offspring. The common sex becomes rarer.
Transcribed Image Text:In most species containing individuals that are either male or female, the proportion of males and females changes over time. This graph shows shifting male female ratios in a wasp population over 10years. Based on the data shown in the graph, select the statements that describe what happens whenever one sex becomes rare or common Percent male or female 100% 80% 60%- 40% 20% 0 Proportion of male and female wasps in a population over a 10-year period 1 2 3 4 5 6 7 Year Males • Females 8 9 10 When one sex becomes either more rare or more common, parents produce an equal number of sons and daughters. The sex ratio returns to an equal number of males and females. When one sex becomes rare, the other sex becomes common due to random fluctuations in the production of male and female offspring. The fitness of the parents is not affected. When one sex becomes rare, parents producing that sex have higher fitness due to a higher probability of mating success in their offspring. The rare sex becomes more common. O When one sex becomes common, parents producing that sex have reduced fitness due to a lower probability of mating success in their offspring. The common sex becomes rarer.
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