Genetics Review

Front

What does 'T' and 't' represent in genetics?

Back

T = tall, t = short.

Front

What is the result of sexual reproduction?

Back

Genetic variation in the offspring.

Front

In a pedigree chart, what does a circle represent?

Back

A female.

Front

What is a karyotype?

Back

A picture that shows the number and appearance of chromosomes in a cell.

Front

What does it mean if an organism is homozygous?

Back

It has two identical alleles for a particular trait.

Front

What is a Punnett square used for?

Back

To predict the genetic outcomes of a cross between two organisms.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their trait even if only one copy is present; recessive alleles require two copies to express their trait.

Front

What is a hybrid organism?

Back

An organism that has two different alleles for a particular trait.

Front

What is the role of gametes in reproduction?

Back

Gametes are reproductive cells (sperm and eggs) that combine during fertilization.

Front

What is a phenotype?

Back

The observable physical traits of an organism.