Download Heredity Review

Heredity Review
Genetics
• Mendel’s discoveries formed the
foundation of ___________, the
scientific study of heredity.
Dominant
• A ___________ allele is one whose
trait always shows up in the organism
when the allele is present.
Trait
• Each different form of a physical
characteristic is a _______.
Gene
• A ______ is the unit of genetic
material that controls a trait.
Homozygous
• An organism that has two identical
alleles for a trait is _____________ .
Genotype
• An organism’s __________ is its
genetic makeup, or allele combination.
Recessive
• A ___________ allele is hidden
whenever the opposite allele is present.
Phenotype
• An organism’s __________ is its
physical appearance, or visible traits.
Heterozygous
• An organism that has two different
alleles for a trait is _____________ .
Heredity
• ___________ is the passing of physical
characteristics from parents to
offspring.
Alleles
• _________ are the different forms of
a gene.