12.1 Lecture

12.1 Lecture

Gregor Mendel and His Principles

Multiple Choice

Gregor Mendel was a botany teacher who lived in the early 1900s.

• True

• False

Multiple Choice

What organism did Mendel use the most to study inheritance?

• humans

• potato plants

• goldfish

• pea plants

Multiple Choice

Pea plants have many characteristics that blend together to form new characteristics in the offspring.

• True

• False

Multiple Choice

Mendel used cross pollination where the pollen from one plant was used to fertilize that same plant.

• True

• False

Multiple Choice

What would you call the offspring when you cross two organisms with different traits?

• mutants

• homozygous

• hybrids

• blends

Multiple Choice

If a plant with green peas is crossed with a plant with yellow peas and all the F1 generation have yellow peas, what does that tell you about green peas?

• that color is dominant

• that color is recessive

• that color causes a mutant

• green peas have no flavor

Multiple Choice

What is the name given to a certain form of a trait or gene?

• option

• allele

• adversary

• allotrope

Multiple Choice

The F1 generation formed from one parent that is a true breed for the dominant trait and the other parent that is a true breed for the recessive trait would all be hybrids for that trait.

• True

• False

Multiple Choice

Mendels crosses between true breed recessives for a particular trait always showed the dominant trait in the F1 generation.

• True

• False

Multiple Choice

Mendel's Law of _____ explained that gametes only contain one allele for each trait.

• Assortment

• Independent Assortment

• Segregation

• Separation

Multiple Choice

Another name for an egg or sperm is called a(n) _____.

• allele

• gamete

• gene

• pollen

Multiple Choice

What is the probability of getting an offspring that shows the dominant form of a trait if two hybrids are crossed?

• 25%

• 50%

• 75%

• 100%

Multiple Choice

What would you call the genotype that consists of one dominant allele and one recessive allele?

• Homozygous dominant

• Homozygous recessive

• Heterozygous recessive

• Heterozygous

Multiple Choice

The physical characteristic of a trait/gene is called the genotype.

• True

• False