2nd Quarterly Review

Front

What is the benefit of increased genetic diversity in future generations?

Back

Increased genetic diversity enhances the ability of a population to adapt to changing environments and resist diseases.

Front

What does a dominant allele mean in genetics?

Back

A dominant allele is one that expresses its trait even when only one copy is present in the genotype.

Front

What is a silent mutation?

Back

A silent mutation is a change in the DNA sequence that does not alter the amino acid sequence of the protein produced.

Front

During which phase of the cell cycle does DNA replication occur?

Back

DNA replication occurs during the S phase of the cell cycle.

Front

What are genes?

Back

Genes are functional units of DNA that contain the instructions for making proteins.

Front

What is codominance in genetics?

Back

Codominance is a genetic scenario where both alleles in a heterozygote are fully expressed, resulting in a phenotype that is neither dominant nor recessive.

Front

What is incomplete dominance?

Back

Incomplete dominance is a genetic situation where one allele does not completely dominate another, resulting in a blended phenotype.

Front

What is a missense mutation?

Back

A missense mutation is a change in a single nucleotide that results in the substitution of one amino acid for another in the protein.

Front

What is a nonsense mutation?

Back

A nonsense mutation is a change in the DNA sequence that creates a premature stop codon, leading to a truncated protein.

Front

What are chromosomes?

Back

Chromosomes are long strands of DNA that contain many genes and are found in the nucleus of eukaryotic cells.