Genetics Practice

Front

Define Alleles

Back

Different versions of the same gene.

Front

What is a phenotype?

Back

Physical traits (the physical expression of a genotype)

Front

Define Gene

Back

A section of DNA that codes for specific proteins/traits.

Front

Why are insertion and deletion (frameshift) mutations so harmful?

Back

They change all of the codons from the mutation on down the line, which changes the amino acid sequence.

Front

What is the correct mRNA strand from this DNA: CAC-GTG-ACA-GCG?

Back

GUG-CAC-UGU-CGC

Front

What is a genotype?

Back

The genetic makeup of an organism, representing the alleles inherited from parents.

Front

What is a dominant allele?

Back

An allele that expresses its trait even in the presence of a recessive allele.

Front

What is a recessive allele?

Back

An allele that only expresses its trait when two copies are present.

Front

What is a mutation?

Back

A change in the DNA sequence that can lead to changes in traits.

Front

What is the role of mRNA in protein synthesis?

Back

mRNA carries the genetic information from DNA to the ribosome for protein synthesis.