6A,7A/B/C,8B Review

Front

What are chromosomes?

Back

Chromosomes are X-shaped structures made of DNA that contain genetic information. They are found in the nucleus of eukaryotic cells.

Front

What is a frameshift mutation?

Back

A frameshift mutation occurs when insertions or deletions of nucleotides in DNA shift the reading frame, potentially altering the entire amino acid sequence.

Front

What is the probability of a child having Type A blood if one parent is Type O and the other is Type AB?

Back

50%.

Front

In a heterozygous genotype, which allele is expressed in the phenotype?

Back

The dominant allele.

Front

What does the codon UGA signify?

Back

UGA is a stop codon that signals the termination of protein synthesis.

Front

What is the function of ribosomes?

Back

Ribosomes are cellular structures that synthesize proteins by translating messenger RNA (mRNA) into amino acid sequences.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their traits in the phenotype even when only one copy is present, while recessive alleles require two copies to be expressed.

Front

What is a Punnett square used for?

Back

A Punnett square is a tool used to predict the genetic outcomes of a cross between two organisms.

Front

What is the role of DNA in cells?

Back

DNA contains the genetic instructions for the development, functioning, growth, and reproduction of all known living organisms.

Front

What is a genotype?

Back

A genotype is the genetic makeup of an organism, representing the alleles inherited from its parents.