Asked by Ayleen Pereyra on May 27, 2024
Verified
Which of the following is the best evidence for a genetic bottleneck in northern elephant seals?
A) They were nearly hunted to extinction.
B) They have low genetic variation within a mitochondrial DNA sequence that has a high mutation rate.
C) Their populations rebounded.
D) all of the above
Genetic Bottleneck
A significant reduction in the genetic diversity of a population due to a large decrease in its size, potentially affecting its survival and evolution.
Mitochondrial DNA
The DNA located in mitochondria, the energy-producing structures within cells, inherited only from the mother and used to trace maternal lineage.
Mutation Rate
The frequency at which new mutations occur in a genome over a particular period of time, influencing genetic variation within populations.
- Grasp the significance of population size and structure in evolutionary processes, including inbreeding and genetic bottlenecks.
- Analyze evidence for genetic bottlenecks, selection pressures, and the maintenance of genetic diversity.
Verified Answer
Learning Objectives
- Grasp the significance of population size and structure in evolutionary processes, including inbreeding and genetic bottlenecks.
- Analyze evidence for genetic bottlenecks, selection pressures, and the maintenance of genetic diversity.
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