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MariettaO [177]
2 years ago
8

What happens when sand and gravel roll along a river bed?

Biology
1 answer:
Alenkinab [10]2 years ago
8 0
It serves as a barrier to biological activity. 
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What does it mean if a population is in Hardy-Weinberg equilibrium? Be specific.
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Answer:

The Hardy-Weinberg law states that in a sufficiently large population, in which matings occur randomly and that is not subject to mutation, selection or migration, gene and genotypic free frequencies are kept constant from one generation to another, once a state of equilibrium has been reached, which in autosomal loci is reached after one generation.

It is said that a population is in equilibrium when the alleles of the polymorphic systems maintain their frequency in the population throughout the generations.

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Some bed bugs had mutations in their genetic code which allowed them to survive the chemical pesticide and they produced chemica
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Random mutations led to evolution of pesticide resistance genes in bed bugs.

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lungs and kidneys

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The median plane divides the body into two halves through a mid line.

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Lungs and kidneys are the only parts which cannot be seen through all the three plains.

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