Question

in a tall green phenotype

1. two heterozygous tall, green pea plants are crossed. what will be the possible genotypes and phenotypes of the offspring? show your work as a punnett square and write your answers as a phenotypic ratio.
2. a tall, green pea plant (ttgg) is crossed with a short, white pea plant (ttgg). what will be the possible genotypes and phenotypes of the offspring? show your work as a punnett square and write your answers as a phenotypic ratio.

Explanation:

Step1: Identify parent gametes

Parent 1 (TtGg) gametes: $TG, Tg, tG, tg$
Parent 2 (ttgg) gametes: $tg$

Step2: Build Punnett Square

	$TG$	$Tg$	$tG$	$tg$

Step3: Classify phenotypes

• $TtGg$: Tall, Green
• $Ttgg$: Tall, White
• $ttGg$: Short, Green
• $ttgg$: Short, White

Step4: Calculate phenotypic ratio

Count each phenotype: 1 Tall Green, 1 Tall White, 1 Short Green, 1 Short White

Answer:

Possible genotypes: $TtGg, Ttgg, ttGg, ttgg$
Phenotypic ratio: 1 Tall Green : 1 Tall White : 1 Short Green : 1 Short White