©SOPHIABENNETT@2024-2025 Monday, August 19, 2024 12:35 AM
Life Science 15 Phelan Midterm 1 Exam
Study Guide with Complete Solutions
evolution - Answer✔️✔️-a change in allele frequencies over time
allele - Answer✔️✔️-one variant of a gene
gene - Answer✔️✔️-section of DNA instructing how to produce a trait
natural selection - Answer✔️✔️-variation, heritability, differential
reproductive success
fitness - Answer✔️✔️-the relative reproductive success of a genotype or
phenotype
4 agents of evolutions - Answer✔️✔️-natural selection, mutation, gene flow,
genetic drift
natural selection - Answer✔️✔️-non-random elimination of alleles
mutation - Answer✔️✔️-a direct alteration of DNA so that one allele is
changed into another
migration/gene flow - Answer✔️✔️-change in allele frequencies because
some members leave and others arrive
genetic drift - Answer✔️✔️-a random change in allele frequencies, will occur
mostly in small populations
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, ©SOPHIABENNETT@2024-2025 Monday, August 19, 2024 12:35 AM
sexual selection - Answer✔️✔️-traits that are more desirable to the opposite
sex are selected for. trade-offs
norm of reaction - Answer✔️✔️-all possible different phenotypes for a given
genotype when raised under all possible conditions. The steeper the norm
of reaction the larger a change in x will yield a change in y. and vice versa.
mendel - Answer✔️✔️-inheritance of pea plants
homologous pair - Answer✔️✔️-two versions of the same gene (one from
father, one from mother)
karyotype - Answer✔️✔️-picture of all chromosomes in a cell
mendels' law of segregation - Answer✔️✔️-a gamete receives only one allele
from the pair of alleles possessed by an organism
law of independent assortment - Answer✔️✔️-the allele you pass for one
trait has no effect on which you pass for another trait
test cross - Answer✔️✔️-a cross between an organism whose genotype for a
certain trait is unknown and an organism that is homozygous recessive for
that trait so the unknown genotype can be determined from that of the
offspring
methods of sex determination - Answer✔️✔️-male/female heterogamety,
ploidy, incubation temperature
why does kindness occur? - Answer✔️✔️-shared genes/kin selection,
reciprocal altruism
Page 2 of 7
Life Science 15 Phelan Midterm 1 Exam
Study Guide with Complete Solutions
evolution - Answer✔️✔️-a change in allele frequencies over time
allele - Answer✔️✔️-one variant of a gene
gene - Answer✔️✔️-section of DNA instructing how to produce a trait
natural selection - Answer✔️✔️-variation, heritability, differential
reproductive success
fitness - Answer✔️✔️-the relative reproductive success of a genotype or
phenotype
4 agents of evolutions - Answer✔️✔️-natural selection, mutation, gene flow,
genetic drift
natural selection - Answer✔️✔️-non-random elimination of alleles
mutation - Answer✔️✔️-a direct alteration of DNA so that one allele is
changed into another
migration/gene flow - Answer✔️✔️-change in allele frequencies because
some members leave and others arrive
genetic drift - Answer✔️✔️-a random change in allele frequencies, will occur
mostly in small populations
Page 1 of 7
, ©SOPHIABENNETT@2024-2025 Monday, August 19, 2024 12:35 AM
sexual selection - Answer✔️✔️-traits that are more desirable to the opposite
sex are selected for. trade-offs
norm of reaction - Answer✔️✔️-all possible different phenotypes for a given
genotype when raised under all possible conditions. The steeper the norm
of reaction the larger a change in x will yield a change in y. and vice versa.
mendel - Answer✔️✔️-inheritance of pea plants
homologous pair - Answer✔️✔️-two versions of the same gene (one from
father, one from mother)
karyotype - Answer✔️✔️-picture of all chromosomes in a cell
mendels' law of segregation - Answer✔️✔️-a gamete receives only one allele
from the pair of alleles possessed by an organism
law of independent assortment - Answer✔️✔️-the allele you pass for one
trait has no effect on which you pass for another trait
test cross - Answer✔️✔️-a cross between an organism whose genotype for a
certain trait is unknown and an organism that is homozygous recessive for
that trait so the unknown genotype can be determined from that of the
offspring
methods of sex determination - Answer✔️✔️-male/female heterogamety,
ploidy, incubation temperature
why does kindness occur? - Answer✔️✔️-shared genes/kin selection,
reciprocal altruism
Page 2 of 7
