Explain why in this crossing all of the hedgehog offspring are brown even though they all carry the white gene?

: In Mendel's original experiments with purple and white pea ... the purple gene was dominant and all of the offspring included that gene so they were purple. ... The offspring from the F1 generation was crossed with another heterozygous ... There is nothing to say that any will come out with sickle cell disease.

Explanation:

b.

the accuracy of the data.

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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