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oksano4ka [1.4K]
3 years ago
15

Gradual variation, as in human skin color, is an example of what?

Biology
1 answer:
hoa [83]3 years ago
4 0
Check this one here

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Describe an example of endosymbiosis that has been observed and documented.
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I recall that Professor Kwang had observed amoebas that had cannibalized bacteria cells. The bacteria were slaughtering the amoebas, but somehow some survived. This particular group of amoebas contained bacteria that thrived inside it. Hence the name, endosymbiosis. However, this lucky group and it's offspring could not survive without bacteria.

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mRNA is a complementary copy of a Dna strand. Write in the complementary RNA bases for the DNA template strand below.
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UUC AUA GCU CCA ACU GGA UAG

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A change in the DNA structure of an organism is called a ?
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Answer:

the change of DNA structure is a mutation

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the molecule  spreads

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Why excretion does not pose problem in plant
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In the 1520s, the Spanish explorer Cortes and his armies carried the virus that causes smallpox to NorthAmerica and South Americ
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