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julsineya [31]
3 years ago
10

Based on fossil evidence, about how long ago did the first single celled life fork appear on earth?

Biology
1 answer:
rewona [7]3 years ago
6 0

Answer:

it was exactly 3.5 billion years ago

Explanation:

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What is the phenotype of a plant with the genotype RR
vazorg [7]
To give a direct answer, I’d have to know what gene we were looking at. However, in a general sense, when a genotype has two capital letters, it means that it’s homozygous dominant. Take for example:

R= tall stalk
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The uppercase R is a dominant allele, which means if the plant has the gene with this in it (RR or Rr) then it will have that trait. If it has two lowercase letters (rr) then it will be the recessive trait.

Using this example, RR would be the tall stalk. For whatever your question is, the dominant phenotype would be the answer.
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C. bb because the white allele is recessive
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D would be the answer
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Dessert and tundra

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Theses two biomes get very little rain and because of this they have a less diversity of fauna and flora.

The differences are that a tundra is very dry and extremely cold and on the other hand a desert is very arid and hot and it can go as high as 54°C (130°F).

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In a minute to win it game cards are placed between cups to stack them. The contestant then pulls the card out and hopes they wi
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The third one, The opening of the cup is so much bigger than the bottom even though the cup moves they will both be stacked together. (I think)

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