Question

a plant shows incomplete dominance in size. a tall plant (tt) is crossed with a medium plant (ts). what fraction of plants will also be tall? 50% 25% 75% 100 %

Explanation:

Step1: Determine Parental Genotypes

The tall plant has genotype \( TT \), so it can only produce gametes with \( T \). The medium plant has genotype \( TS \), so it can produce gametes with \( T \) or \( S \).

Step2: Create Punnett Square

	\( T \)	\( T \)
\( S \)	\( TS \)	\( TS \)

Step3: Analyze Offspring Genotypes

From the Punnett square, the offspring genotypes are \( TT \) (tall) and \( TS \) (medium). There are 2 \( TT \) and 2 \( TS \) out of 4 total offspring. The fraction of tall plants (\( TT \)) is \( \frac{2}{4} = 0.5 \) or 50%.

Answer:

50%