BIO 1108 Lecture Exam 1 | UPDATED Questions with 100%
Verified Answers
Q1: biology
A: the science of how life works
Q2: evolution
A: descent with modification
Q3: genes
A: can be passed down from parents to offspring, are comprised of DNA sequences, are
found in a particular location of a chromosome (DNA that code for phenotypes)
Q4: alleles
A: are variants of a gene, can be passed down from parents to offspring, are comprised of
DNA sequences, are found in a particular location of a chromosome (unique gene
variants)
Q5: genotype
A: an individuals set of alleles (all the alleles for a specific phenotype)
Q6: phenotype
A: influenced by the environment and DNA, an individuals trait
Q7: diploid organisms
A: 2 alleles for every gene
Q8: asexual reproduction
A: identical off spring High degree of genotypic and phenotypic similarity Rare DNA
mutations can occur that change DNA sequence
Q9: sexual reproduction
A: results in offspring with unique recombination of DNA from the parents; only mutations
passed are in sperm or egg
, Q10: mutation
A: the ultimate source for new alleles; this is how the S allele first appeared
Q11: recombination
A: in sexually reproducing organisms, recombination occurs during meiosis
Q12: gene pool
A: all the alleles present across all individuals within a population
Q13: HardyWeinberg equilibrium
A: 1. no selection 2. the population must be relatively large (no genetic drift) 3. no migration
4. no mutations 5. random mating
Q14: for natural selection to occur
A: 1. variation 2. heritability 3. competition 4. mortality
Q15: fitness
A: Ability of an organism to survive and reproduce in its environment
Q16: adaptations
A: are heritable so offspring have these traits as well; the trait becomes common over
generations
Q17: natural selection for alleles=
A: increased frequency
Q18: natural selection against alleles=
A: decreased frequency
Q19: balancing selection= selection favoring variation=
A: multiple alleles maintained
Verified Answers
Q1: biology
A: the science of how life works
Q2: evolution
A: descent with modification
Q3: genes
A: can be passed down from parents to offspring, are comprised of DNA sequences, are
found in a particular location of a chromosome (DNA that code for phenotypes)
Q4: alleles
A: are variants of a gene, can be passed down from parents to offspring, are comprised of
DNA sequences, are found in a particular location of a chromosome (unique gene
variants)
Q5: genotype
A: an individuals set of alleles (all the alleles for a specific phenotype)
Q6: phenotype
A: influenced by the environment and DNA, an individuals trait
Q7: diploid organisms
A: 2 alleles for every gene
Q8: asexual reproduction
A: identical off spring High degree of genotypic and phenotypic similarity Rare DNA
mutations can occur that change DNA sequence
Q9: sexual reproduction
A: results in offspring with unique recombination of DNA from the parents; only mutations
passed are in sperm or egg
, Q10: mutation
A: the ultimate source for new alleles; this is how the S allele first appeared
Q11: recombination
A: in sexually reproducing organisms, recombination occurs during meiosis
Q12: gene pool
A: all the alleles present across all individuals within a population
Q13: HardyWeinberg equilibrium
A: 1. no selection 2. the population must be relatively large (no genetic drift) 3. no migration
4. no mutations 5. random mating
Q14: for natural selection to occur
A: 1. variation 2. heritability 3. competition 4. mortality
Q15: fitness
A: Ability of an organism to survive and reproduce in its environment
Q16: adaptations
A: are heritable so offspring have these traits as well; the trait becomes common over
generations
Q17: natural selection for alleles=
A: increased frequency
Q18: natural selection against alleles=
A: decreased frequency
Q19: balancing selection= selection favoring variation=
A: multiple alleles maintained
