Biology Spring Final

Front

What is co-dominance in genetics?

Back

Co-dominance is a type of inheritance pattern where both traits from the parents are fully expressed in the offspring. For example, in a flower with red and white parents, the offspring may have both red and white petals.

Front

What is the probability of a blue-eyed child from two brown-eyed parents (Bb)?

Back

The probability is 25%. This is determined using a Punnett square, where Bb x Bb results in 1 BB, 2 Bb, and 1 bb, giving a 1 in 4 chance for bb (blue eyes).

Front

What is transcription in biology?

Back

Transcription is the process by which the DNA sequence of a gene is copied into messenger RNA (mRNA). This occurs in the nucleus and is the first step in gene expression.

Front

What is the first Disney Princess?

Back

The first Disney Princess is Snow White, who debuted in the 1937 animated film 'Snow White and the Seven Dwarfs'.

Front

What is the role of polymerase in DNA replication?

Back

Polymerase is an enzyme that synthesizes new DNA strands by adding nucleotides complementary to the template strand during DNA replication.

Front

What is complete dominance in genetics?

Back

Complete dominance is an inheritance pattern where the dominant allele completely masks the effect of the recessive allele in a heterozygous genotype.

Front

What is incomplete dominance?

Back

Incomplete dominance is an inheritance pattern where the phenotype of the heterozygote is intermediate between the phenotypes of the two homozygotes. For example, red and white flowers may produce pink flowers.

Front

What is a Punnett square?

Back

A Punnett square is a diagram used to predict the genotypes of offspring from a cross between two parents. It helps visualize the probability of inheriting particular traits.

Front

What is the function of ribosomes in a cell?

Back

Ribosomes are the cellular structures responsible for protein synthesis, translating messenger RNA (mRNA) into polypeptide chains.

Front

What is the difference between DNA and RNA?

Back

DNA (deoxyribonucleic acid) is double-stranded and contains the sugar deoxyribose, while RNA (ribonucleic acid) is single-stranded and contains the sugar ribose.