Genetics Assessment Review

Front

What is a gene?

Back

A gene is a segment of DNA that defines our traits. Humans have hundreds to thousands of these on each chromosome, totaling around 30,000.

Front

What genotype is represented by the letters 'BB'?

Back

The genotype 'BB' represents a homozygous dominant genotype for a trait.

Front

What is a trait in genetics?

Back

A trait is a notable feature in a person or other organism that is passed from generation to generation.

Front

What are alleles?

Back

Alleles are different forms of a gene, represented by one of the letters of a genotype.

Front

What is the probability of two parents having a Tall offspring if the Punnett Square shows a 75% chance?

Back

The probability of the two parents having a Tall offspring is 75%.

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup of an organism, while phenotype refers to the observable characteristics or traits of that organism.

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene.

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene.

Front

What is a Punnett Square used for?

Back

A Punnett Square is used to predict the genotypes and phenotypes of offspring from a genetic cross.

Front

What is the significance of dominant and recessive alleles?

Back

Dominant alleles mask the effect of recessive alleles in heterozygous individuals, determining the phenotype.