Gregor Mendel

Who was Gregor Mendel?

• A Russian chemist

• An Austrian monk

• A German scientist

• A British biologist

What did Gregor Mendel study to learn about genetics?

• Pea plants

• Mice

• Fruit flies

• Human genetics

What happens when two purebred traits are crossed, according to Mendel's experiments?

• The offspring have a mix of both traits

• The traits blend together

• The dominant trait appears in the offspring

• The recessive trait appears in the offspring

What did Mendel find in the F2 generation when he bred two F1 generation peas together?

• All green peas

• 100% yellow peas

• 75% yellow peas and 25% green peas

• 50% green and 50% yellow peas

What concept did Mendel introduce to explain the inheritance of traits?

• Chromosomes

• Proteins

• Genes

• DNA

What are alleles?

• Small sections of DNA that code for proteins

• Variations of a gene that determine specific traits

• Types of genes that cause diseases

• Cells that carry genetic information

How are dominant alleles represented when writing genotypes?

• With numbers

• With uppercase letters

• With symbols

• With lowercase letters

What does it mean if an organism is heterozygous for a trait?

• It does not have the gene for that trait

• It has one dominant and one recessive allele

• It has two identical recessive alleles

• It has two identical dominant alleles

What would the genotype look like for a plant that is homozygous dominant for tallness?

• Tt

• tT

• tt

• TT

What are the possible gamete combinations for a heterozygous tall plant?

• T or t

• TT or tt

• Tt

• TT or Tt