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andre [41]
2 years ago
5

Based on Darwin's observations, what is the best possible explanation that two organisms that live very far away from each other

and in different environments share similar traits?
A: The organisms evolved similar traits that are useful in a wide variety of environments.
B: These organisms developed similar traits because their environments were at one time similar.
C: The organisms share a common ancestor from long ago.
Biology
2 answers:
mestny [16]2 years ago
7 0
B because it just makes sense
earnstyle [38]2 years ago
5 0

Answer:

B: These organisms developed similar traits because their environments were at one time similar.

Explanation:

As per the given data the answer is correct.

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The answers would be:

Genotype                Phenotype

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     tt                       Short stemmed

Genotypic ratio : 2:2 or 1:1

Phenotypic ratio: 2:2  or 1:1  

<u />

<u>You can read on to see how this was done:</u>

Tall stems (T) are dominant to short stems (t).

First figure out the genotypes of the parents. We have a short-stemmed plant and a heterozygous long-stemmed plant cross.

For short stem to occur, you need 2 pairs of short alleles. So the first parent would have a genotype of tt.

Heterozygous long-stemmed means that the parent has one of each allele. So the genotype of the second parent would be, Tt.

Now we can make our Punnett Square.

tt x Tt

<u>       t        t  </u>

<u>T |  Tt  |   Tt</u>

<u>t  |   tt  |   tt</u>

Let's list down the genotypes and phenotypic results.

Genotype        no.         Phenotype

     Tt                 2           Tall stemmed

     tt                  2           Short stemmed

So from that we can answer the other questions:

Genotypic ratio : 2:2 or 1:1

Phenotypic ratio: 2:2  or 1:1  

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