Biology Chapter 9 Vocab Review

The alleles of a particular gene are different

the two alleles for a trait separate when gametes are formed

the alleles of different genes separate independently of one another during gamete formation

not expressed when the dominant form of the trait is present

passing of traits from parents to offspring

all the offspring display only one form of a particular trait

factor that masks another form of a trait

first two individuals crossed in a breeding experiment

physical apperance of an organism

a cross that considers one pair of contrasting traits

offspring of the F1 generation

when the two allels of a particular gene are the same

branch of biology that studies heredity

different versions of a gene

offspring of the P generation

set of allels that an individual has

a cross that considers two pairs of contrasting traits

genetically determined variant of a characteristic

diagram that predicts the outcomes of a genetic cross

cross of a homozygous recessive individual with an individual with a dmoninant phenotype of unknown genotype

the likelihood that a specific event will occur

fraction of genotypes that appear in offspring

when heterozygous plants and homozygous dominant plants have the same phenotype

when pollen is transferred to a stigma from the smae plant

when an individual displays a trait that is intermediat between the two parents

when both alleles for a trait are expressed in a heterozygous individual

fraction of phenotypes that appear in offspring

occurs between flowers of two different plants

study of the structure and function of chromosomes and genes

when pollen grains are transferred to the stigma