Review for 8th Science FCAT (Heredity)

Front

Heredity is the passing of traits from _____________________ to _____________________

Back

parents to offspring

Front

What are the chances that the offspring will have homozygous recessive traits?

Back

50%

Front

True or False: Recessive traits are ALWAYS present

Back

False

Front

Which of the following is homozygous dominant? (Jj, Rr, MM, ee)

Back

MM

Front

What allele combination should go in the missing box? (AA, Aa, aa, none of these)

Back

Aa

Front

What is a gene?

Back

A segment of DNA that determines a specific trait.

Front

Define allele.

Back

Different forms of a gene that can exist at a specific locus.

Front

What is the difference between homozygous and heterozygous?

Back

Homozygous has two identical alleles; heterozygous has two different alleles.

Front

What does dominant mean in genetics?

Back

A dominant allele masks the effect of a recessive allele.

Front

What does recessive mean in genetics?

Back

A recessive allele is only expressed when two copies are present.