Mendelian Genetics

Front

How many alleles do you have for one gene?

Back

Two

Front

The form of a gene that is always expressed if present is the ________ form.

Back

dominant

Front

Where do your alleles come from?

Back

From our parents

Front

What is a Phenotype?

Back

The observable characteristics or physical traits of an organism.

Front

What law BEST explains why an organism with ‘Tt’ will show only the dominant phenotype?

Back

Law of Dominance

Front

What is a genotype?

Back

The genetic makeup of an organism, consisting of alleles inherited from both parents.

Front

What is the difference between homozygous and heterozygous?

Back

Homozygous means having two identical alleles for a trait, while heterozygous means having two different alleles.

Front

What is the Law of Segregation?

Back

The principle that during the formation of gametes, the two alleles for a trait separate from each other.

Front

What is a Punnett square?

Back

A diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles.

Front

What is a recessive allele?

Back

An allele that is masked by the presence of a dominant allele and is only expressed when two copies are present.