MENDELIAN GENETICS

Recessive genes will always be masked by dominant genes. This is Mendel's principle of ...............

Dominance

The characteristic that results from a monohybrid cross is the _____ trait.

Dominante

The seeds collected from the first generation monohybrids are called _____.

F1

What can be expected for the recessive trait of monohybrids from the F2 generation?

None of the above

recessive

a gene or trait that is masked when a dominant allele is present

Each trait of a plant is determined by _____.

a pair of genes

homozygous

a pair of genes that are identical in the way they influence a trait

heterozygous

a pair of non-identical genes that influence a trait in different ways

The genotype represents _____.

a paired combination of genes

purebred

a phenotype (trait) resulting from homozygous genes from the offspring of true breeding

allele

alternative form for a specific gene (either dominant or recessive)

dominant

can prevent the allele from being expressed in a pair of genes

Heredity allows for ______.

change between generations consistency between generations

A monohybrid cross is made between plants that _____.

differ in only one trait

To determine if a particular plant is homozygous or heterozygous, you would have to test cross with a _____ to make the check.

homozygous recessive

hybrid

offspring from a cross between parents; has different phenotypes for a specific trait

The outward appearance of a particular trait is called the

phenotype

Mendel believed that during the formation of gametes, the pair of genes controlling a trait separate. He called this the principle of _____.

segregation

monohybrid cross

the breeding of two organisms that differ in a single trait

phenotype

the expression of a genetic trait; what the trait looks like

genotype

the genes present in an organism

Why did Mendel prevent his plants from self-pollinating?

to control the crossing of the traits

self-fertilization

when an organism that possesses both male and female gametes brings the two genetically identical gametes together to produce offspring