BISC 120 Midterm 1 @ USC questions with
correct answers
Genotype - CORRECT ANSWERS ✔✔an organism's genetic
makeup
Phenotype - CORRECT ANSWERS ✔✔observable traits of an
organism
Allele - CORRECT ANSWERS ✔✔an alternate version of a gene
Gene - CORRECT ANSWERS ✔✔a unit of heredity information
made of a specific nucleotide sequence
Character - CORRECT ANSWERS ✔✔an observable, heritable trait
Trait - CORRECT ANSWERS ✔✔a variant of a character
Dihybrid - CORRECT ANSWERS ✔✔an individual that is
heterozygous for 2 genes of interest
,True breeding - CORRECT ANSWERS ✔✔organisms that produce
offspring of the same variety over many generations of self-
pollination
Testcross - CORRECT ANSWERS ✔✔breeding an individual of
unknown genotype with a homozygous recessive individual to
determine the unknown genotype
Eugenics movement - CORRECT ANSWERS ✔✔a social
movement that claimed that the human race could be improved
through selective breeding
Gregor Mendel - CORRECT ANSWERS ✔✔Austrian monk who
developed laws of inheritance
cross-fertilization - CORRECT ANSWERS ✔✔the fertilization of an
organism by the fusion of an egg from one individual with a sperm
or male gamete from a different individual
self-fertilization - CORRECT ANSWERS ✔✔fertilization that
, occurs when male and female gametes produced by the same
organism unite
addition rule - CORRECT ANSWERS ✔✔when calculating the
probability of either event A or B occurring, add their individual
probabilities together
dominant allele - CORRECT ANSWERS ✔✔an allele that is fully
expressed in the phenotype of a heterozygote
recessive allele - CORRECT ANSWERS ✔✔an allele whose
phenotypic effect is not observed in a heterozygote
Law of Segregation - CORRECT ANSWERS ✔✔two alleles
segregate (separate) during gamete formation and end up in
different gametes
Law of Independent Assortment - CORRECT ANSWERS ✔✔each
pair of alleles assorts (segregates) independently of each other pair
during gamete formation
correct answers
Genotype - CORRECT ANSWERS ✔✔an organism's genetic
makeup
Phenotype - CORRECT ANSWERS ✔✔observable traits of an
organism
Allele - CORRECT ANSWERS ✔✔an alternate version of a gene
Gene - CORRECT ANSWERS ✔✔a unit of heredity information
made of a specific nucleotide sequence
Character - CORRECT ANSWERS ✔✔an observable, heritable trait
Trait - CORRECT ANSWERS ✔✔a variant of a character
Dihybrid - CORRECT ANSWERS ✔✔an individual that is
heterozygous for 2 genes of interest
,True breeding - CORRECT ANSWERS ✔✔organisms that produce
offspring of the same variety over many generations of self-
pollination
Testcross - CORRECT ANSWERS ✔✔breeding an individual of
unknown genotype with a homozygous recessive individual to
determine the unknown genotype
Eugenics movement - CORRECT ANSWERS ✔✔a social
movement that claimed that the human race could be improved
through selective breeding
Gregor Mendel - CORRECT ANSWERS ✔✔Austrian monk who
developed laws of inheritance
cross-fertilization - CORRECT ANSWERS ✔✔the fertilization of an
organism by the fusion of an egg from one individual with a sperm
or male gamete from a different individual
self-fertilization - CORRECT ANSWERS ✔✔fertilization that
, occurs when male and female gametes produced by the same
organism unite
addition rule - CORRECT ANSWERS ✔✔when calculating the
probability of either event A or B occurring, add their individual
probabilities together
dominant allele - CORRECT ANSWERS ✔✔an allele that is fully
expressed in the phenotype of a heterozygote
recessive allele - CORRECT ANSWERS ✔✔an allele whose
phenotypic effect is not observed in a heterozygote
Law of Segregation - CORRECT ANSWERS ✔✔two alleles
segregate (separate) during gamete formation and end up in
different gametes
Law of Independent Assortment - CORRECT ANSWERS ✔✔each
pair of alleles assorts (segregates) independently of each other pair
during gamete formation
