GREGOR MENDEL AND GENETICS

Front

Humans have _______ pairs of chromosomes, for a total of _______ chromosomes.

Back

23 pairs, 46 chromosomes.

Front

An observable characteristic is called a _______.

Back

trait.

Front

This image shows a _______.

Back

Punnett Square.

Front

Two brown-eyed parents (Bb) have a baby. What is the chance the baby is blue-eyed?

Back

25%.

Front

What allele combination should go in the missing box?

Back

Aa.

Front

What is the basic unit of heredity?

Back

Gene.

Front

What is the term for the physical expression of a trait?

Back

Phenotype.

Front

What is the term for the genetic makeup of an organism?

Back

Genotype.

Front

What do we call an allele that masks the effect of another allele?

Back

Dominant allele.

Front

What do we call an allele that is masked by a dominant allele?

Back

Recessive allele.