Question

n a certain species of plant, red petals (R) are dominant to white (r). According to the Punnett Square, what is the probability of an offspring being white?

R r
R RR Rr
r Rr rr


(1 point)
Responses

25%
25%

50%
50%

75%
75%

100%
100%
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Answer 1

To determine the probability of an offspring being white (rr), we'll look at the Punnett square data provided:

```
R r
__________
R | RR | Rr |
|_______|_____|
r | Rr | rr |
|_______|_____|
```

From the Punnett square, we can see the following genotypes for the offspring:
- RR (red)
- Rr (red)
- Rr (red)
- rr (white)

There is 1 instance of the genotype rr (white) out of a total of 4 possible outcomes.

The probability of an offspring being white (rr) is:

\[ \frac{\text{Number of rr outcomes}}{\text{Total number of outcomes}} = \frac{1}{4} = 25\% \]

So the correct response is:

**25%**