Ch. 4 Lesson A Ch. Review

a purebred pea plant with green pods (PP) has been crossed with a purebred pea plant with yellow pods (pp). What is the genotype and phenotype of the first generation offspring?

Genotype Pp, phenotype green pods

how did Mendel study heredity

Mendel bred pea plants and studied the characteristics of different generations

A pea plant with yellow pods has a genotype of gg. Is it purebred or a hybrid? Is the yellow pod trait dominant or recessive

purebred with a recessive trait

What is a dominant trait

A trait of a specific character that appears in a hybrid organism

how do genotypes and phenotypes relate

A genotype is the genetic information that produces a phenotype, or physical trait

What are the three principle of heredity

1) In a cross of purebreds, all offspring will show the dominant trait 2) for any one character, the two alleles for a parent's gene separate and then combine with the other parent's alleles to determine the offspring's trait. 3) A parent passes each allele to its offspring independently of all other alleles

how do you know which traits are dominant in an organism like a pea plant

The traits that are expressed in the first generation of offspring of a cross of two different purebreds are dominant. They are also most common in the first generation hybrid cross