Biology SOL Practice Questions - Set 3 - DNA/RNA & Genetics

Front

What is Chargaff's Rule in DNA base pairing?

Back

Chargaff's Rule states that in DNA, the amount of adenine (A) equals thymine (T) and the amount of cytosine (C) equals guanine (G).

Front

What are the two types of mutations that can cause a frameshift mutation?

Back

Addition and deletion are the two types of mutations that can cause a frameshift mutation.

Front

In pea plants, what does the letter 'T' represent?

Back

In pea plants, 'T' represents the dominant allele for tall plants.

Front

What does the letter 't' represent in pea plants?

Back

In pea plants, 't' represents the recessive allele for short plants.

Front

What is the genotype for a heterozygous tall pea plant?

Back

The genotype for a heterozygous tall pea plant is 'Tt'.

Front

What is a helpful mutation?

Back

A helpful mutation is a genetic change that provides an advantage, such as developing speed.

Front

What is the difference between a dominant and a recessive allele?

Back

A dominant allele masks the effect of a recessive allele in a heterozygous genotype.

Front

What is a genotype?

Back

A genotype is the genetic makeup of an organism, represented by the alleles it possesses.

Front

What is a phenotype?

Back

A phenotype is the observable physical or biochemical characteristics of an organism, determined by its genotype.

Front

What is the significance of the 'Aa' genotype?

Back

The 'Aa' genotype indicates a heterozygous condition, where one allele is dominant and the other is recessive.