GENETICS: A CONCEPTUAL APPROACH EXAM
PREP QUESTIONS AND ANSWERS FULLY
VERIFIED
◉ Allele.
Answer: One of two or more alternative forms of a gene
◉ Locus.
Answer: Position on a chromosome where a specific gene is located.
◉ Genotype.
Answer: The set of genes possessed by an individual organism.
◉ Homozygous.
Answer: Refers to an individual organism that possesses two
identical alleles at a locus.
◉ Heterozygous.
Answer: Refers to an individual organism that possesses two
different alleles at a locus.
◉ Phenotype.
, Answer: Appearance or manifestation of a characteristic.
◉ Monohybrid cross.
Answer: A cross between two individuals that differ in a single
characteristic--more specifically, a cross between individuals that
are homozygous for different alleles at the same locus (AA x aa); also
refers to a cross between two individuals that are heterozygous for
two alleles at a single locus (Aa x Aa).
◉ P (parental) generation.
Answer: First set of parents in a genetic cross.
◉ F1 (filial 1) generation.
Answer: Offspring of the initial parents (P) in a genetic cross.
◉ Reciprocal crosses.
Answer: Crosses in which the phenotypes of the male and female
parents are reversed. For example, in one cross, a tall male is crossed
with a short female and, in the other cross, a short male is crossed
with a tall female.
◉ F2 (filial 2) generation.
Answer: Offspring of the F1 generation in a genetic cross; the third
generation of a genetic cross.
PREP QUESTIONS AND ANSWERS FULLY
VERIFIED
◉ Allele.
Answer: One of two or more alternative forms of a gene
◉ Locus.
Answer: Position on a chromosome where a specific gene is located.
◉ Genotype.
Answer: The set of genes possessed by an individual organism.
◉ Homozygous.
Answer: Refers to an individual organism that possesses two
identical alleles at a locus.
◉ Heterozygous.
Answer: Refers to an individual organism that possesses two
different alleles at a locus.
◉ Phenotype.
, Answer: Appearance or manifestation of a characteristic.
◉ Monohybrid cross.
Answer: A cross between two individuals that differ in a single
characteristic--more specifically, a cross between individuals that
are homozygous for different alleles at the same locus (AA x aa); also
refers to a cross between two individuals that are heterozygous for
two alleles at a single locus (Aa x Aa).
◉ P (parental) generation.
Answer: First set of parents in a genetic cross.
◉ F1 (filial 1) generation.
Answer: Offspring of the initial parents (P) in a genetic cross.
◉ Reciprocal crosses.
Answer: Crosses in which the phenotypes of the male and female
parents are reversed. For example, in one cross, a tall male is crossed
with a short female and, in the other cross, a short male is crossed
with a tall female.
◉ F2 (filial 2) generation.
Answer: Offspring of the F1 generation in a genetic cross; the third
generation of a genetic cross.
