An Austrian monk known as the "father of genetics"

The different or alternative versions of a gene

What are segments of DNA called?

An allele represented by a lowercase letter

The genetic makeup for a set of alleles, represented by a combination of capital or lower case letters (Bb)

Physical expression of a gene, an observable characteristic

To inherit a recessive trait, it needs to be inherited from ___ parents to be expressed (physically apparent)

Pick all genotypes that show dominance

(mark all correct answers) The picture shown is called a:

An allele that masks the presence of another allele is known as a _______________ allele.

What phenotypic ratio would you expect from a cross of 2 heterozygous offspring for a single trait?

Choose all correct answers - When both alleles in the pair are the SAME, the organism could be considered:

What phenotype ratio is a clue that a dihybrid cross a mating of two fully heterozygous parents?

Choose all correct answers: when an organism has 2 diferent alleles for a single gene, they are considered:

In pea plants, flowers can either be pink (P, dominant) or white (p, recessive). If a pink flowered (Pp) and a white flowered pea plant (pp) are crossed, what is the predicted phenotype of the offspring?

The allele for purple flowers is dominant to the allele for white flowers. Which would be correct?

In Holstein cattle the allele for black hair color (B) is dominant over the allele for red hair

color (b), and the allele for polled (P), or lacking horns, is dominant over the allele for having

horns (p).

What is the expected phenotypic ratio of the offspring of a BbPp × BbPp cross if these alleles

sort independently?

Facial dimples and free earlobes are both considered dominant human traits. What are the

expected phenotypes of the offspring of a female with dimples and free earlobes (DDFf) and a

male with no dimples and attached earlobes (ddff)?

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.

Referring to the original parents.

Second Filial Generation: the offspring of F₁

First Filial (child) Generation: the offspring of P₁

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

Hitchhiker's thumb (H) is dominant to no hitchhiker's thumb (h). A woman who does not have hitchhiker's thumb marries a man who is heterozygous for hitchhiker's thumb. What is the probable genotypic ratio of their children?

A cat with curled ears was crossed with a cat with non curled ears. All of the kittens born had non curled ears. Later when the offspring were crossed with each other, the phenotypic ration was 3 to 1 non-curled to curled ears. What conclusions can be made about curled ears?

What is the genotypic ration of the offspring in the cross above?

Round peas (R) are dominant to wrinkled peas (r). In the P generation, a homozygous round parent was crossed with a homozygous wrinkled parent. (Hint: it may be helpful to sketch out a Punnett square with these as the parents).

What is true of the F1 generation (the offspring of the P generation)?

Round peas (R) are dominant to wrinkled peas (r). In the P generation, a homozygous round parent was crossed with a homozygous wrinkled parent. (Hint: it may be helpful to sketch out a Punnett square with these as the parents).

If two F1 generation plants were crossed together, Mendel’s law of segregation supports…

What goes in box 3

A white mouse with red eyes is crossed with a black mouse with brown eyes. The white mouse is recessive for both of its traits. The black mouse is dominant for both of its traits.

This cross would be