Genetics Vocabulary Review Questions and
Answers (100% Correct Answers) Already
Graded A+
Heredity [ Ans: ] The passing of traits from parents to
offspring.
Gene [ Ans: ] A segment of DNA on a chromosome that
codes for a specific trait.
Allele [ Ans: ] An alternative form of a gene.
Chromosome [ Ans: ] 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 [ Ans: ] Term used to refer to an organism
that has two identical alleles for a particular trait.
Heterozygous [ Ans: ] Term used to refer to an organism
that has two different alleles for a particular trait.
Trait [ Ans: ] A characteristic that an organism can pass on
to its offspring through its genes.
Dominant [ Ans: ] Describes a trait that covers over, or
dominates, another form of that trait.
, Recessive [ Ans: ] Describes a trait that is covered over, or
dominated, by another form of that trait and seems to
disappear.
Genotype [ Ans: ] An organism's genetic makeup, or allele
combinations.
Phenotype [ Ans: ] An organism's physical appearance, or
visible traits.
Pedigree [ Ans: ] A diagram that shows the occurrence of a
genetic trait in several generations of a family.
Punnett Square [ Ans: ] A chart that shows all the possible
combinations of alleles that can result from a genetic
cross.
Variation [ Ans: ] Demonstrated by the difference in
appearance that offspring show from parents and siblings.
Genetic Cross [ Ans: ] 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 [ Ans: ] A nucleic acid found in the nucleus of all
living cells, which carries the organism's hereditary
information.
Probability [ Ans: ] A measure of the likelihood of an
event. It is the ratio of the number of ways a certain event
Answers (100% Correct Answers) Already
Graded A+
Heredity [ Ans: ] The passing of traits from parents to
offspring.
Gene [ Ans: ] A segment of DNA on a chromosome that
codes for a specific trait.
Allele [ Ans: ] An alternative form of a gene.
Chromosome [ Ans: ] 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 [ Ans: ] Term used to refer to an organism
that has two identical alleles for a particular trait.
Heterozygous [ Ans: ] Term used to refer to an organism
that has two different alleles for a particular trait.
Trait [ Ans: ] A characteristic that an organism can pass on
to its offspring through its genes.
Dominant [ Ans: ] Describes a trait that covers over, or
dominates, another form of that trait.
, Recessive [ Ans: ] Describes a trait that is covered over, or
dominated, by another form of that trait and seems to
disappear.
Genotype [ Ans: ] An organism's genetic makeup, or allele
combinations.
Phenotype [ Ans: ] An organism's physical appearance, or
visible traits.
Pedigree [ Ans: ] A diagram that shows the occurrence of a
genetic trait in several generations of a family.
Punnett Square [ Ans: ] A chart that shows all the possible
combinations of alleles that can result from a genetic
cross.
Variation [ Ans: ] Demonstrated by the difference in
appearance that offspring show from parents and siblings.
Genetic Cross [ Ans: ] 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 [ Ans: ] A nucleic acid found in the nucleus of all
living cells, which carries the organism's hereditary
information.
Probability [ Ans: ] A measure of the likelihood of an
event. It is the ratio of the number of ways a certain event
