Genetics

Which statement best describes Mendel's experiments?

• He began with hybrid plants
• He controlled pollination
• He observed only one generation
• He used plants that reproduce slowly

What was the independent variable in Mendel's experiments?

• the richness of the soil
• the type of pollination
• the color of the flowers
• the height of the stems

What was the dependent variable in Mendel's experiment?

• the richness of the soil
• the type of pollination
• the color of the flowers
• the amount of sunlight

Which term describes the genotype of the offspring of the first generation in Mendel's experiment?

• true breeding
• purebred
• hybrid
• homozygous

Mendel used pea plants for his experiment because _______

• They reproduce quickly
• they have easily observable traits
• He was able to control pollination
• All of the above

When Mendel crossed a true breeding plant with purple flowers with a true breeding plant with white flowers, all the offspring had purple flowers. This is because white flowers are _____________

• the dominant trait
• the recessive trait
• a trait controlled by multiples alleles
• a trait controlled by multiples genes

If yellow (Y)  is dominant over green (y), what would be the genotype for a hybrid?

• YY
• yy
• Yy
• None of the above

If yellow (Y)  is dominant over green (y), What is the probability to have a green seed if you cross two hybrids?

• 100%
• 75%
• 25%
• 0%

If yellow (Y)  is dominant over green (y), What is the probability to have a homozygous dominant if you cross two hybrids?

• 100%
• 75%
• 25%
• 0%

If yellow (Y)  is dominant over green (y) and a 100 seeds were collected after a crossing of two hybrids, how many seeds are going to be green?

• 100 seeds
• 75 seeds
• 25 seeds
• 0 seeds