Scientist think that all of life on earth originated from which type of organism?

1 answer:

7 0

They think that people started as a fish and there was a resolution into a bigger fish then into a land creature then into a monkey then into a man. They think that the earth was a little rock at the beginning but then other rocks joined it and it became 1 big planet. But this is just what they think.

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the answer is F

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The temperature of the earth

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In beetles, the gene for color and the gene for pattern are located on the same chromosome and exhibit recombination. The lined

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Explanation:

The genes that determine color and pattern are linked.

Solid pattern allele (L) is dominant over lined pattern (l)
Blue color allele (B) is dominant over aqua color (b)

<h3>Initial cross</h3>

Homozygous lined aqua beetle has the genotype lb/lb

It can produce only 1 type of gamete: lb

Homozygous solid blue beetle has the genotype LB/LB

It can produce only 1 type of gamete: LB

The F1 is formed by the union of the parents' gametes, so it will have the genotype lb/LB

<h3>F1 test cross</h3>

Test crosses involve a homozygous recessive individual.

The homozygous recessive individual lb/lb can only produce 1 type of gamete:

lb

The F1 individual lb/LB can produce 4 types of gametes:

lb - parental
LB - parental
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Lb - recombinant

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