Changes in the genetic makeup of a population are referred to as: gene mutation

Question

Changes in the genetic makeup of a population are referred to as: gene mutation trait mutation microevolution gene pooling macroevolution Which of the following is an example of natural selection? the bottleneck that cheetah populations went through overfishing of Atlantic cod African elephants becoming scarce due to the ivory trade two species of salamander attempting to breed with each other mice with dark fur becoming more abundant on lava flows Geographic isolation: is when one population of a species is physically isolated causes genetic mutations can lead to speciation increases gene flow both A and C are true What is the number one cause of extinction today? habitat loss smog overexploitation radiation from outer space introduced species The current mass extinction is different from past mass extinctions since we are not seeing large numbers of new species rise up to take the places of the extinct species. True false

Explanation / Answer

1) answer is c- microevolution that is the change in allele frequencies that occurs over time within a population.

2) answer is e - mice with dark fur becoming abundant in Lawa flows.

3) answer is e- Both a and C are true.

4) answer is a - habitat loss because animals finding their homes destroyed to the point at which their survival is no longer possible. Habitat fragmentation will remain the sole cause of species extinction and sadly its increasing at an exponential rate.

5) answer is a- TRUE because the present rate of extinction may be up to 140,000 species per year, making it the greatest loss of biodiversity.

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