Biology Semester 1 Review

Front

What is a dihybrid cross?

Back

A dihybrid cross is a genetic cross that examines the inheritance of two different traits, each represented by two alleles.

Front

What is a mutation in DNA?

Back

A mutation is a change in the DNA sequence that can lead to changes in the structure and function of proteins.

Front

What is a silent mutation?

Back

A silent mutation is a type of mutation that does not change the amino acid sequence of a protein.

Front

What occurs during metaphase in mitosis?

Back

During metaphase, chromosomes align at the cell's equatorial plane, and spindle fibers attach to their centromeres.

Front

What occurs during anaphase in mitosis?

Back

During anaphase, sister chromatids are pulled apart to opposite poles of the cell.

Front

What are nucleotides?

Back

Nucleotides are the building blocks of DNA and RNA, consisting of a sugar, a phosphate group, and a nitrogenous base.

Front

What distinguishes one nucleotide from another?

Back

The nitrogenous base distinguishes one nucleotide from another.

Front

What is the role of the nitrogenous base in DNA?

Back

The nitrogenous base encodes genetic information and pairs with complementary bases in the DNA double helix.

Front

What is the function of deoxyribose sugar in DNA?

Back

Deoxyribose sugar forms the backbone of the DNA molecule, linking nucleotides together.

Front

What is the significance of the phosphate group in DNA?

Back

The phosphate group links the deoxyribose sugars of adjacent nucleotides, forming the DNA backbone.