Show:
Gregor Mendel
Dominant vs. Recessive
Punnet Squares
Genetics Vocabulary
Laws/Rules
100

Gregor Mendel is known as the...

Father of Genetics

100

This type of allele masks another allele.

Dominant

100

This tool predicts possible offspring genotypes.

Punnett square

100

The genetic makeup of an organism.

Genotype

100

This law states that allele pairs separate during the formation of gametes.

Law of Segregation

200

Mendel experimented on this type of plant.

Pea plants

200

If a trait disappears in F1 but returns in F2, it must be this type.

Recessive

200

In a Punnett square, each parent contributes this many alleles per trait.

One allele

200

The physical appearance of an organism.

Phenotype

200

Mendel’s law that applies to genes on different chromosomes.

Law of Independent Assortment

300

Why did Mendel choose pea plants?
A) They live forever
B) They have many traits and short generations
C) They only have dominant traits
D) They grow underground

B) They have many traits and short generations

300

Which genotype is heterozygous?
A) AA
B) aa
C) Aa
D) BB

C) Aa

300

What cross produces all Tt offspring?
A) Tt Γ— Tt
B) TT Γ— tt
C) tt Γ— tt
D) Tt Γ— tt

B) TT Γ— tt

300

Which genotype is homozygous recessive?
A) AA
B) Aa
C) Bb
D) aa

D) aa

300

Which phenotypic ratio provides evidence for Mendel’s Law of Independent Assortment?

A) 3:1
B) 1:1
C) 9:3:3:1
D) 4:1

C) 9:3:3:1

400

The parental generation in Mendel’s experiments is called this.

P generation

400

Mendel found this phenotypic ratio in the F2 generation of monohybrid crosses.

3:1

400

A cross between two heterozygous individuals is called this.

Monohybrid cross

400

An organism with two identical alleles is described as this.

Homozygous

400

The probability that two or more mutually exclusive events will occur.

Addition rule

500

The generation where the recessive trait reappears is this one.

 F2 generation

500

Mendel concluded that purple flowers were dominant because when true-breeding purple and white pea plants were crossed, this happened in the F1 generation.

All offspring had purple flowers

500

In a Tt Γ— Tt cross, what fraction of offspring are homozygous recessive?

1/4

500

A cross used to determine if a dominant phenotype is heterozygous or homozygous.

Testcross

500

The probability that two or more independent events will occur together in some specific combination.

Multiplication rule