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2 years ago

What is the probability that a seed from a parent plant of genotype Rr will carry the r gene?

Biology

2 answers:

vredina [299]2 years ago

7 0

B. 1/2
I hope this is right!!

Alex777 [14]2 years ago

3 0

The parent will carry over the gene no matter what but to make it show there needs to be rr not just Rr because the R is dominant and will show but the r is the weaker one so there has to be two so I say B

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He based his hypothesis on a statement made by a dairymaid.

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Answer:

$\frac{1}{126}$ or 0.0079.

Explanation:

Joyce is planting tulips in her garden.

Number of red (R) bulbs = 5

Number of white (W) bulbs = 5

Total number of ways to plant 10 bulbs in one row is

$\text{Total ways}=\frac{10!}{5!5!}$

$\text{Total ways}=\frac{10\times 9\times 8\times 7\times 6\times 5!}{5\times 4\times 3\times 2\times 1\times 5!}$

Cancel out common factors.

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$\text{Required outcomes}=2$

Formula for probability:

$Probability=\frac{\text{Required outcomes}}{\text{Total ways}}$

$Probability=\frac{2}{252}$

$Probability=\frac{1}{126}$

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Therefore the required probability is $\frac{1}{126}$ or 0.0079.

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3 years ago

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