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