Which of the following is a homozygous recessive genotype?

Which of the following is a Homozygous Dominant Genotype?

Which of the following is a heterozygous genotype?

Fill in the Yellow Box

In a Punnett Square, 1 box is equal to 25%. How much are 3 boxes equal to?

Fill in the Yellow Box

What chance the offspring born from this cross will have a homozygous dominant genotype?

The punnett square is used to tell the color of a frogs skin. "G" means green skin and "g" means brown skin. What is the chance the baby frogs will have brown skin?

What is the mother's genotype?

In a heterozygous genotype, the ___________ allele takes over in the phenotype.

Aa, DD, Ba, and yy are all examples of ---

AA and Aa always show up as ---

The different forms of a gene

This trait always shows up in an organism when the allele is present

This trait is hidden whenever the dominant allele is present

A chart that shows all the possible combinations of alleles that can result from a genetic cross

An organism's genetic makeup, or allele combination. The letters we use to show the allele combination.

An organism that has two identical (THE SAME) alleles for a trait (purebred)

An organism that has two different alleles for a trait (hybrid)

Segments of chromosomes that contain coded information for an organisms trait

The outward expression, or appearance, of a genetic trait is its

The designation Rr for a pea plant's peas shows that the plant is

Passing on traits from parents to offspring

A feature regulated by a set of genes (allele) passed on

from parents to offspring. Also called inherited traits.

The instruction of one allele covers up the instruction

of the other allele in a homologous pair. Symbolized by a capital letter.

The instructions of this allele are covered up by the other allele in a homologous pair. Symbolized by a small letter.

The letter symbols for both homologous alleles.

BB Bb bb AA Aa aa

A genotype where only recessive alleles

were passed on from both parents for one trait

bb aa tt ll

A genotype where only dominant alleles were passed on

from both parents for one trait

BB AA TT LL

The observable traits dictated by the genotype

During meiosis and gamete formation, homologous (paired up) alleles split up

During meiosis, the homologous pairs of chromosomes and the matching alleles are lined up independently.

Offspring are a mix of maternal genes and paternal genes.

This increases genetic variation.

The genetic cross between two parents for one trait:

Example BB x bb

B = dominant for brown

b = recessive for blue

Referring to the original parents.

First Filial (child) Generation: the offspring of P₁

Second Filial Generation: the offspring of F₁

The ratio of homozygous dominant to heterozygous

to homozygous recessive offspring

The ratio of phenotypes in a Punnett Square

The chance that a genotype or phenotype

will actually occur in offspring

Red (R) is dominant over white (r). How can a flower be white?

A _______ is an alternative form a gene.

a trait that is always expressed if present is _____________________

a trait that is masked unless 2 copies are present is ________________________

alleles for a trait that are the same

alleles for a trait that are the different

the physical/observable characteristic

the organism's genetic makeup

Select all that would be considered phenotypes:

Select all that would be considered genotypes:

Law of segregation states:

Law of independent assortment states:

Independent assortment happens:

What goes in box 15

Based off this punnett square, what fraction of the offspring will have wrinkled, yellow seeds?

Based off this punnett square, what fraction of the offspring will have wrinkled, green seeds?

What is the genotype for a pea plant homozygous for round seeds (R), and heterozygous for yellow seeds?

What is the expected phenotypic ratio of a dihybrid cross between two heterozygous individuals?