Scientists Studying Speciation Often Look at Both Nuclear DNA and Mitochondrial

question 29

Multiple Choice

Scientists studying speciation often look at both nuclear DNA and mitochondrial DNA. Why is the genetic information obtained from mitochondrial DNA different from information obtained through nuclear DNA in sexually reproducing species?

• A) In most organisms, mitochondrial DNA is inherited from the male, while nuclear DNA is inherited from both parents.
• B) Mitochondrial DNA has a very low rate of mutation and is highly conserved, while nuclear DNA changes rapidly.
• C) In most organisms, mitochondrial DNA is inherited from the female, while nuclear DNA is inherited from both parents.
• D) Mitochondrial DNA only has one set of chromosomes, while nuclear DNA typically has multiple sets of chromosomes.

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Definitions:

Deferred Imitation

The ability to replicate a behavior observed at an earlier time, even in the absence of the immediate presence of the original stimulus.

Symbolic Play

A type of play in which children use objects, actions, or ideas to represent other objects, actions, or ideas, as part of their cognitive development.

Sensorimotor Stage

Piaget’s first stage in cognitive development, in which infants learn through senses and motor activity.

Recognition Memory

The ability to recognize previously encountered events, objects, or people.