What is the ratio of 4 different phenotypes among the offspr

What is the ratio of 4 different phenotypes among the offsprings in the following hybrid cross? What are the 4-phenotype. Write the cross using genetics syntax, specify gametes, Punnett square. Starting with heterozygous plants with smooth pea shape and long stem. Starting with heterozygous plants with yellow pea color and white flower color. What could be the genotype of the parents who have Two kids one of which is tongue roller and the bitter taste (homozygous for both traits) and the other is a non-roller and non taster. Note, both abilities are dominant traits. Two-kids, both of which are non-millers and non-tasters. Analyze a pedigree chart of disease inheritance (all students). Assess what the type of inheritance it is. Write 2 characteristics that support your answer.

Solution

1. a. Heterozygous plants with Smooth pea shape and long stem

SsLl x SsLl

The ratio is 9 (smooth, long) :3 (rough,long):3 (smooth short):3 (rough, short)

b. Heterozygous plants with Yellow pea colour and white flower colour

YyWw x YyWw

9 (yellow, white):3 (yellow,non-white):3 (non-yellow, white):1(non yellow, non-white)

	SL	Sl	sL	sl
SL	SSLL (smooth,long)	SSLl (smooth,long)	SsLL (smooth,long)	SsLl (smooth,long)
Sl	SSLl (smooth,long)	SSll (smooth, short)	SsLl (smooth,long)	Ssll smooth, short)
sL	SsLL (smooth,long)	SSLl (smooth,long)	ssLL (rough, long)	ssLl (rough, long)
sl	SsLl (smooth,long)	Ssll smooth, short)	ssLl ((rough, long))	ssll (rough short)