Genetics Vocabulary Review Exam
Questions and Answers Graded A+
Heredity - Correct answer-The passing of traits from parents to offspring.
Gene - Correct answer-A segment of DNA on a chromosome that codes for a
specific trait.
Allele - Correct answer-An alternative form of a gene.
Chromosome - Correct answer-A chromosome is an organized structure of DNA,
protein, and RNA found in cells. It is a single piece of coiled DNA containing
many genes, regulatory elements and other nucleotide sequence.
Homozygous - Correct answer-Term used to refer to an organism that has two
identical alleles for a particular trait.
Heterozygous - Correct answer-Term used to refer to an organism that has two
different alleles for a particular trait.
Trait - Correct answer-A characteristic that an organism can pass on to its offspring
through its genes.
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, Dominant - Correct answer-Describes a trait that covers over, or dominates,
another form of that trait.
Recessive - Correct answer-Describes a trait that is covered over, or dominated, by
another form of that trait and seems to disappear.
Genotype - Correct answer-An organism's genetic makeup, or allele combinations.
Phenotype - Correct answer-An organism's physical appearance, or visible traits.
Pedigree - Correct answer-A diagram that shows the occurrence of a genetic trait in
several generations of a family.
Punnett Square - Correct answer-A chart that shows all the possible combinations
of alleles that can result from a genetic cross.
Variation - Correct answer-Demonstrated by the difference in appearance that
offspring show from parents and siblings.
Genetic Cross - Correct answer-Used frequently in transmission genetics, involves
the breeding of two selected individuals and the subsequent analysis of their
offspring to try to understand how traits are passed from parents to offspring.
DNA - Correct answer-A nucleic acid found in the nucleus of all living cells, which
carries the organism's hereditary information.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
Questions and Answers Graded A+
Heredity - Correct answer-The passing of traits from parents to offspring.
Gene - Correct answer-A segment of DNA on a chromosome that codes for a
specific trait.
Allele - Correct answer-An alternative form of a gene.
Chromosome - Correct answer-A chromosome is an organized structure of DNA,
protein, and RNA found in cells. It is a single piece of coiled DNA containing
many genes, regulatory elements and other nucleotide sequence.
Homozygous - Correct answer-Term used to refer to an organism that has two
identical alleles for a particular trait.
Heterozygous - Correct answer-Term used to refer to an organism that has two
different alleles for a particular trait.
Trait - Correct answer-A characteristic that an organism can pass on to its offspring
through its genes.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, Dominant - Correct answer-Describes a trait that covers over, or dominates,
another form of that trait.
Recessive - Correct answer-Describes a trait that is covered over, or dominated, by
another form of that trait and seems to disappear.
Genotype - Correct answer-An organism's genetic makeup, or allele combinations.
Phenotype - Correct answer-An organism's physical appearance, or visible traits.
Pedigree - Correct answer-A diagram that shows the occurrence of a genetic trait in
several generations of a family.
Punnett Square - Correct answer-A chart that shows all the possible combinations
of alleles that can result from a genetic cross.
Variation - Correct answer-Demonstrated by the difference in appearance that
offspring show from parents and siblings.
Genetic Cross - Correct answer-Used frequently in transmission genetics, involves
the breeding of two selected individuals and the subsequent analysis of their
offspring to try to understand how traits are passed from parents to offspring.
DNA - Correct answer-A nucleic acid found in the nucleus of all living cells, which
carries the organism's hereditary information.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
