Genetics Unit

Genetics 1

100

 What organism did the very famous Gregor Mendel study in his garden?

Pea Plants

200

Physical characteristics are called

traits

300

A black cat (B) crosses with a white cat (W) and the offspring come out spotted. What type of dominance is this?

Codominance

400

Factors that control traits are called

genes

500

The different forms of a gene are called

alleles

Genetics 2

100

The type of allele in whose trait always shows up in the organism if the allele is present

dominant allele

200

The type of allele that can be masked, or covered up

recessive allele

300

A mom with AB blood type crosses with a man with O blood type. What are the genotypes of phenotypes of the offspring?

AO, BO 50/50

A Blood and B blood, 50/50

400

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

Punnett square

500

The likelihood that an event will occur

Probability

Genetics 3

100

A cross with a Tt (tall) pea plant and another tt pea plant will result in what probability for a short pea plant?

50%

200

A cross with a BB (black guinea pig) and a bb (white guinea pig) will result in what probability of a white guinea pig?

0%

300

What is an organism's genotype?

Its genetic makeup, or allele combination

For example TT, Tt ,tt,  BB, Bb, bb

400

What is an organism's phenotype?

Its physical appearance or traits

( For example a tall pea plant or a black guinea pig)

500

An organism with two identical alleles is called what?

homozygous

Genetics 4

100

An organism with two different alleles for a trait is called what?

heterozygous

200

name of the Genotype if an organism's is TT

Homozygous dominant

300

A Red flower (RR) crosses with a white flower (WW). The offspring are all Pink (RW). Cross two pink flowers. What are the genotypes and phenotypes of the offspring?

25% RR, 50% RW, 25% WW

25% Red, 50% Pink, 25% White

400

Possible letter code if the organism is purebred for the recessive trait.

bb (or any other letter as long as both are lowercase).

500

Which is considered the phenotype? 

Mm, rr. TT   OR   blonde vs brown hair

blonde hair vs brown hair

Genetics 5

100

What is the study of heredity?

Genetics

200

Which gender has XY chromosomes?

Male/boy

300

A man who is colorblind marries a woman who is not colorblind. Their son is colorblind. What is the genotype of the woman? H = Normal, h - colorblind

X^HX^h

400

The monk who performed experiments on pea plants, known as the father of genetics

Gregor Mendel

500

What are the genotypes for each parent if 1/4 of the offspring in a punnett square is homozygous recessive?

Both heterozygous.