In pea plants, the allele for tall plants (T) is dominant,over short plants (t), and the allele for purple flowers (P) is dominant over white flowers (p). A plant heterozygous for both traits (TtPp) is crossed with a plant that is short and has white flowers (ttp). What is the probability that the offspring will be tall with white flowers? Hint: make the punnett square! A) 25% B) 50% C) 75% D) 100%

To solve this problem, we need to use a Punnett square to determine the probability of the offspring being tall with white flowers.<br /><br />Given information:<br />- The allele for tall plants (T) is dominant over short plants (t).<br />- The allele for purple flowers (P) is dominant over white flowers (p).<br />- A plant heterozygous for both traits (TtPp) is crossed with a plant that is short and has white flowers (ttpp).<br /><br />Step 1: Determine the possible genotypes of the parents.<br />Parent 1: TtPp (heterozygous for both traits)<br />Parent 2: ttpp (short and white flowers)<br /><br />Step 2: Create a Punnett square to determine the possible genotypes of the offspring.<br /><br />| | T | t | P | p |<br />|-------|-----|-----|-----|-----|<br />| t | Tt | tt | Pp | pp |<br />| p | Tp | tp | Pp | pp |<br /><br />Step 3: Calculate the probability of the offspring being tall with white flowers.<br />From the Punnett square, we can see that there are 4 possible genotypes for the offspring:<br />1. TtPp (tall with purple flowers)<br />2. Ttpp (tall with white flowers)<br />3. ttPp (short with purple flowers)<br />4. ttpp (short with white flowers)<br /><br />Out of these 4 genotypes, only 1 (Ttpp) results in the offspring being tall with white flowers.<br /><br />Therefore, the probability of the offspring being tall with white flowers is 1 out of 4, or 25%.<br /><br />The correct answer is A) 25%.