Biology, 29.08.2019 04:30 ariana0517

Agroup of penguins is standing on an iceberg. half the iceberg falls into the ocean and half of the penguins are killed leaving the remaining penguins to carry on the population. what is this is an example of?

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Answer from: abolton04

Hello! Your answer is the bottleneck effect.

Speaking more broadly, genetic drift is when a population becomes smaller, and there are fewer genotypes in the gene pool. There are two types of genetic drift: the bottleneck effect and the founder effect.

The bottleneck effect is when an environmental change / human activity causes many members of the population to die, which means that the gene pool is now represented by just a few organisms. This is correct in this scenario, as an environmental change caused the gene pool to be reduced.

The founder effect is when a new colony is established elsewhere, so only alleles in the smaller founder group will be reproduced.

Hope this helps!

Answer from: Quest

I'm sorry to hear that. i will try to answer your other questions if it is within my ability. : )answers: my favourite colour is black.my favourite food is pasta.my favourite school subject is english, but i do also like lunch time.my least favourite subject is history as well as geography. i have currently garnered a quite equal hatred for both of the subjects.what about you? well, you for the points. : )

Answer from: Quest

1. the geologists have established a set of principals that can can be used o determine the relative ages of rock. this principal is applied to sedimentary and volcanic rocks. the rocks exposed to wall of grand canyon has layers and by studying the number of horizontal layers in the rock(strata) the relative age can be determined. the layer first formed will appear at the bottom and the the layer of strata last formed appear at the top. by using this information the approximate age of rocks can be determined.

2. carbon dating is used to find the relative age of rock in numbers which means for the rocks that has age between 1-70,000 years.

3. for the rocks of age range between 1,000 - billion of years potassium-argon dating is used.

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Agroup of penguins is standing on an iceberg. half the iceberg falls into the ocean and half of the...