Question

pea plant height is an inherited trait that is controlled by a single gene. the allele for tall height (t) is dominant, and the allele for short height (t) is recessive. in an experiment, two heterozygous tall plants were crossed. the punnett square shows the possible genotypes of the offspring. what percentage of the offspring will likely be tall? (1 point) 100% 50% 75%

Explanation:

Step1: Analyze genotypes

Genotypes \(TT\), \(Tt\) result in tall plants (since \(T\) is dominant). Genotypes \(tt\) result in short plants.

Step2: Count tall - related genotypes

From the Punnett square: \(TT\), \(Tt\), \(Tt\) (3 out of 4) are tall - related genotypes.

Step3: Calculate percentage

Percentage of tall plants \(=\frac{3}{4}\times100\% = 75\%\)

Answer:

75%