Imagine That,of Three Species,it Is Known That Species 1 and 3

question 22

Multiple Choice

Imagine that,of three species,it is known that species 1 and 3 were separated 10 million years ago,based on geologic measurements.Genetic analysis at a neutral locus indicates that these species differ by 100 substitutions.If there are 10 substitutions separating species 1 and 2,approximately how long ago did these species diverge?

• A)0.1 million years ago
• B)1 million years ago
• C)10 million years ago
• D)100 million years ago
• E)Cannot be determined based on the information provided

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Definitions:

Mate Assistance Hypothesis

A theory proposing that monogamy can evolve when males gain more reproductive success by providing care and protection to their mate and offspring than by seeking additional mates.

Mate Limitation Hypothesis

A theory suggesting that the availability of potential reproductive partners limits the reproductive success of individuals, particularly in populations with skewed sex ratios.

Monogamy

The practice of maintaining a sexually exclusive relationship with one partner over a period of time.

Genetic Diversity Hypothesis

The proposition that genetic variation within a population or species is beneficial for its survival and adaptation, often leading to increased resistance to disease and environmental changes.