BIOL 1334 Exam 1 Actual study set with
Questions and correct/verified Answers
MUTATION - ANSWER-change in DNA nucleotide sequence, can be spontaneous or induced. INCREASE
VARIATION, NONADAPTIVE
phenotype - ANSWER-visible/physical features of an individual
genotype - ANSWER-particular genetic makeup of an individual
gene - ANSWER-sequence of DNA that contains the information to make at least one protein
allele - ANSWER-alternative versions of the same gene that has different nucleotide sequence
character - ANSWER-any observable feature of an organism, whether acquired or inherited
mitosis - ANSWER-asexual, identical cells, equal number of chromosomes each resulting in a diploid cell.
1 DIVISION 2 DIPLOID CELLS
meiosis - ANSWER-sexual, genetically different cells, crossing-over, number of chromosomes are reduced
by half. 2 DIVISIONS 4 HAPLOID CELLS
only in ovaries and testes aka gametes
species - ANSWER-group of organisms whose members possess similar anatomical characteristics
population - ANSWER-members of species living in the same place at the same time
gene pool - ANSWER-all genes (i.e. collection of allele variations) in a population at one time
phenotypic variation - ANSWER-the variation of physical features/phenotypes
genetic variation - ANSWER-the variation of genetic features/genotypes
biological evolution - ANSWER-changes in heritable traits within a population across generations. cannot
occur in an individual's lifetimes
POPULATIONS OVER GENERATIONS
microevolution - ANSWER-any change in genetic makeup of population across generations i.e. gene pool.
1. mutations
2. genetic drift
3. natural selection
4. artificial selection?
5. gene flow/migration
GENETIC DRIFT - ANSWER-change in allele frequency between generations that occur purely by chance,
decreases the genetic diversity of a population
i.e. a storm or drought DECREASE VARIATION, NONADAPTIVE
Questions and correct/verified Answers
MUTATION - ANSWER-change in DNA nucleotide sequence, can be spontaneous or induced. INCREASE
VARIATION, NONADAPTIVE
phenotype - ANSWER-visible/physical features of an individual
genotype - ANSWER-particular genetic makeup of an individual
gene - ANSWER-sequence of DNA that contains the information to make at least one protein
allele - ANSWER-alternative versions of the same gene that has different nucleotide sequence
character - ANSWER-any observable feature of an organism, whether acquired or inherited
mitosis - ANSWER-asexual, identical cells, equal number of chromosomes each resulting in a diploid cell.
1 DIVISION 2 DIPLOID CELLS
meiosis - ANSWER-sexual, genetically different cells, crossing-over, number of chromosomes are reduced
by half. 2 DIVISIONS 4 HAPLOID CELLS
only in ovaries and testes aka gametes
species - ANSWER-group of organisms whose members possess similar anatomical characteristics
population - ANSWER-members of species living in the same place at the same time
gene pool - ANSWER-all genes (i.e. collection of allele variations) in a population at one time
phenotypic variation - ANSWER-the variation of physical features/phenotypes
genetic variation - ANSWER-the variation of genetic features/genotypes
biological evolution - ANSWER-changes in heritable traits within a population across generations. cannot
occur in an individual's lifetimes
POPULATIONS OVER GENERATIONS
microevolution - ANSWER-any change in genetic makeup of population across generations i.e. gene pool.
1. mutations
2. genetic drift
3. natural selection
4. artificial selection?
5. gene flow/migration
GENETIC DRIFT - ANSWER-change in allele frequency between generations that occur purely by chance,
decreases the genetic diversity of a population
i.e. a storm or drought DECREASE VARIATION, NONADAPTIVE
