Mendel's Experiments

The video tutorial explains genetic inheritance using eye color as an example. It introduces Gregor Mendel's pioneering work on inheritance patterns through his experiments with pea plants. Mendel's studies on monohybrid and dihybrid crosses revealed dominant and recessive traits, leading to the formulation of Mendelian ratios. His work laid the foundation for modern genetics, although it was initially overlooked until rediscovered in 1900 by other scientists.

What is the primary reason for the difference in eye color between the siblings mentioned in the introduction?

• The boy inherited a dominant gene for black eyes.

• The siblings have different diets.

• The girl inherited a recessive gene for blue eyes.

• The parents have different eye colors.

Which of the following traits was NOT studied by Mendel in his pea plant experiments?

• Seed shape

• Flower color

• Plant height

• Leaf size

What is the purpose of removing anthers from flowers during Mendel's crossing experiments?

• To enhance flower growth

• To prevent self-pollination

• To increase seed production

• To change flower color

What is the process called when pollen grains from one plant are transferred to the stigma of another plant?

• Natural pollination

• Artificial hybridization

• Cross-breeding

• Self-fertilization

In Mendel's monohybrid crosses, what was the observed ratio of dominant to recessive traits in the F2 generation?

• 1:1

• 2:1

• 3:1

• 4:1

What did Mendel refer to as the trait that was expressed in the F1 generation?

• Recessive

• Dominant

• Neutral

• Intermediate

What is the significance of the 1:2:1 ratio observed in Mendel's experiments?

• It represents the ratio of dominant to recessive traits.

• It describes the ratio of tall to short plants.

• It indicates the ratio of pure dominant, hybrid, and pure recessive traits.

• It shows the ratio of male to female offspring.

In Mendel's dihybrid crosses, what was the ratio of the four different types of seeds in the F2 generation?

• 9:3:3:1

• 3:1

• 1:1

• 2:2:1:1

Which of the following is NOT one of Mendel's generalizations?

• Factors occur in pairs.

• One factor dominates the other.

• Factors for different traits assort independently.

• Factors are influenced by environmental conditions.

Who were the botanists that rediscovered Mendel's work in 1900?

• Gregor Mendel, Carl Linnaeus, and Louis Pasteur

• Charles Darwin, Alfred Wallace, and Thomas Morgan

• Hugo DeVries, Carl Correns, and Erich Von Tschermak

• James Watson, Francis Crick, and Rosalind Franklin