Transcript Genetics Vocabulary Review

GENETICS
REVIEW
A physical trait that shows
as a result of an
organism’s particular
genotype.
PHENOTYPE
An organism that has two
different alleles for a trait.
HETEROZYGOUS
The mathematical chance
that an event will occur.
PROBABILITY
Form of a trait that appears
to overshadow or mask
another form of the same
trait.
DOMINANT
A synonym for
heterozygous.
HYBRID
A characteristic of an
organism controlled by a
gene.
TRAIT
Male sex cell.
SPERM
Strands of DNA and protein
found in the nucleus of a
cell carrying the code for
the characteristics of an
organism.
CHROMOSOME
A synonym for
homozygous.
PUREBRED
A tool for predicting
possible traits in offspring.
PUNNETT SQUARE
Occurrence of a trait that
makes individuals different
from members of the same
species.
VARIATION
Form of a trait that can
disappear in a population
but can reappear in future
generations.
RECESSIVE
Segment of DNA on a
chromosome controlling
the inheritance of traits.
GENE
Female sex cell.
EGG
The different forms a gene
may have for a trait.
ALLELE
An organism that has two
identical alleles for a trait.
HOMOZYGOUS
The genetic makeup of an
organism for a trait; alleles
in a gene pair.
GENOTYPE
Pair of chromosomes
containing alleles for the
same traits.
HOMOLOGOUS
The passing of traits from
parent to offspring.
HEREDITY
* Knowing the vocabulary is
half the battle . . . You must
also know how to apply the
terminology in order to
answer questions about the
relationship between parents
and their offspring.
GENETICS
THE STUDY OF HEREDITY