The Graph Below Shows the Reproductive Success for Males of Two

question 17

Multiple Choice

The graph below shows the reproductive success for males of two different species as a function of the number of mates they obtain. For which species would you expect sexual selection on males to be stronger?

• A) species 2; males of species 2 are expected to compete less strongly over access to females
• B) species 1; males of species 1 are expected to compete less over access to females
• C) species 2; males of species 2 are expected to compete more strongly over access to females
• D) species 1; males of species 1 are expected to compete more strongly over access to females

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Definitions:

Monozygotic Twins

Twins who develop from a single fertilized egg, making them genetically identical.

Dizygotic Twins

Also known as fraternal twins, these are siblings born at the same time but developed from two different eggs fertilized by two different sperm cells.

Klinefelter's Syndrome

A genetic condition affecting males, characterized by the presence of an extra X chromosome, which can lead to physical abnormalities and fertility issues.

Fragile X Syndrome

A genetic disorder characterized by intellectual disability, behavioral challenges, and distinctive physical features, caused by a mutation in the FMR1 gene.