Based on the data shown in the graph, select the statements that describe what happens whenever one sex becomes rare or common. 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. 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. 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 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.

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
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Based on the data shown in the graph, select the statements that describe what happens whenever one sex becomes rare or common.

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.
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.
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 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.
In most species containing individuals that are either male or female, the proportion of males and females changes over time.
Proportion of male and female wasps in a
population over a 10-year period
100%
80%-
60%
40%
20%
0 1
2
3
4
5 6
7
8 9
10
Year
Males
• Females
Percent male or female
Transcribed Image Text:In most species containing individuals that are either male or female, the proportion of males and females changes over time. Proportion of male and female wasps in a population over a 10-year period 100% 80%- 60% 40% 20% 0 1 2 3 4 5 6 7 8 9 10 Year Males • Females Percent male or female
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