Chapter 12/15 Biology

What is the result of the fertilization process between male and female reproductive cells?

• A new cell called an embryo

• A new plant

• A new gene

• A new chromosome

What term is used to describe a form of fertilization that uses only one parent with both reproductive cells?

• Self-fertilization

• Cross-fertilization

• Hybrid fertilization

• Double fertilization

What did Mendel do to study the hybrids of different plants?

• He cross-pollinated two different plants

• He self-fertilized the plants

• He observed natural plant reproduction

• He planted them in different environments

What is the offspring of self-fertilization referred to as?

• True breeding

• Hybrid breeding

• Cross breeding

• Mixed breeding

What characteristic does the offspring of self-fertilization contain?

• The same traits as the parent

• Traits from multiple parents

• No traits from the parent

• Different traits from the parent

What did Mendel discover about traits in the F1 generation offspring?

• All traits from the parents were expressed.

• Some of the traits had disappeared.

• New traits appeared that were not present in the parents.

• Traits were blended from both parents.

What are alleles according to Mendel's findings?

• Factors that determine our age.

• Physical characteristics like height and weight.

• Different forms in which genes are expressed.

• The location of genes on a chromosome.

What is the Principle of Dominance as concluded by Mendel?

• Recessive alleles are always expressed over dominant alleles.

• Dominant alleles are expressed over recessive alleles.

• All alleles are equally dominant.

• Alleles are only expressed in pairs.

How are recessive alleles expressed according to Mendel?

• In pairs.

• Over dominant alleles.

• Individually.

• Not at all.

What did Mendel observe in the F2 generation after allowing the F1 hybrids to self-pollinate?

• The recessive genes disappeared completely.

• The dominant genes were the only ones expressed.

• The recessive genes reappeared in the F2 generation.

• No new genes were observed in the F2 generation.