Monohybrid and dihybrid crosses?complete a punnet square to illistrate your answer?

Question

1) in pea plants, yellow peas r dominate over green peas.use a ppunnett square to podict the phenotypic and genotypicoutcome of a cross bettween a plant heterozygous for yellow peas and a plant homozgous for green peas. use Y for dominate and y for recessive.

q2)a tall pea plant crossed with a short pea plant produces offspring;of which about half are tall and half are short. what are the genotypes of the parents? show the possible gamete combinations using a punnett square.

please i really need help.

Answer 1

Do a punnett square for the genotypes Yy and yy. You will find that the phenotypic ratio is 1 yellow: 1 green, and the phenotypic ratio is 1 Yy: 1 yy.

The first question is an example of a gamete combination that results in a 1:1 phenotypic ratio