Gregor Mendel's Pea Plant Experiments

What did Gregor Mendel study in the 1800s?

• Animal inheritance

• Trait inheritance in pea plants

• Plant reproduction

• Human genetics

Which trait did Mendel focus on in his pea plant experiments?

• Leaf shape

• Flower color

• Stem length

• Fruit size

How many variations of pea color did Mendel observe?

• Three

• Four

• Five

• Two

What does it mean for a plant to be pure breeding?

• It carries genetic information for multiple traits.

• It carries genetic information for only one type of trait.

• It cannot reproduce.

• It has a mix of genetic information.

What was the result of crossing two pure breeding plants with yellow and green peas?

• All plants had yellow peas.

• All plants had green peas.

• Some plants had yellow peas and some had green peas.

• No plants were produced.

What were the offspring of the F1 generation called?

• P generation

• F2 generation

• Hybrids

• Pure breeding plants

What did Mendel observe in the F2 generation?

• All plants had yellow peas.

• All plants had green peas.

• Three-quarters of the plants had yellow peas and one-quarter had green peas.

• The plants had a mix of yellow and green peas.

What did the reappearance of green peas in the F2 generation tell Mendel?

• Each plant carries two copies of a gene.

• Each plant carries one copy of a gene.

• The F1 generation does not have any genetic information for green peas.

• The F2 generation does not have any genetic information for yellow peas.

How many alleles for pea color did Mendel infer exist?

• One dominant allele and one recessive allele

• Two dominant alleles

• Two recessive alleles

• Three alleles

How did Mendel explain the presence of both yellow and green peas in the F2 generation?

• The plants inherited one allele from each parent.

• The plants inherited only the dominant allele from their parents.

• The plants inherited only the recessive allele from their parents.

• The allele inheritance in the F2 generation is random.