exam 5 bio 189 Questions with 100%
Correct Answers
heredity Correct Answer: passing of genes from one generation to the next
variation Correct Answer: different forms of similar features
genetics Correct Answer: the study of inheritance and inherited variation
character Correct Answer: a physical feature of an organism
trait Correct Answer: a version of a character
gene Correct Answer: sequence of DNA that codes for a protein and thus
determines a trait
allele Correct Answer: different forms of a gene
locus Correct Answer: the location of a particular gene on a chromosome
sexual reproduction Correct Answer: type of reproduction in which cells from
two parents unite to form the first cell of a new organism
asexual reproduction Correct Answer: process of reproduction involving a single
parent that results in offspring that are genetically identical to the parent
advantages of asexual reproduction Correct Answer: faster reproduction, only
need 1 indivudual
heterozygous Correct Answer: having two different alleles for a trait
, disadvantages for asexual reproduction Correct Answer: lacks genetic variation,
same weaknesses, if environment changes there may not be time to adapt
quick enough
advantages of sexual reproduction Correct Answer: genetic variation
disadvantages of sexual reproduction Correct Answer: slower process, less
population growth, requires long-term energy use
homozygous dominant Correct Answer: organisms with two copies of the
functional gene
can never pass on the lethal recessive
trait
carriers Correct Answer: organisms with one functional gene and one non-
functional gene can pass the gene onto their offspring
chromosome 21 Correct Answer: down syndrome
mutation in genes Correct Answer: change involving the nucleotides of DNA
what is the ultimate cause of cancer? Correct Answer: genetic mutations in
DNA
crossing over occurs during Correct Answer: prophase I of meiosis I
negative mutation Correct Answer: a mutation that harms an organism
silent mutation Correct Answer: alters a base but does not change the amino
acid
positive mutation Correct Answer: a mutation that benefits an organism
Correct Answers
heredity Correct Answer: passing of genes from one generation to the next
variation Correct Answer: different forms of similar features
genetics Correct Answer: the study of inheritance and inherited variation
character Correct Answer: a physical feature of an organism
trait Correct Answer: a version of a character
gene Correct Answer: sequence of DNA that codes for a protein and thus
determines a trait
allele Correct Answer: different forms of a gene
locus Correct Answer: the location of a particular gene on a chromosome
sexual reproduction Correct Answer: type of reproduction in which cells from
two parents unite to form the first cell of a new organism
asexual reproduction Correct Answer: process of reproduction involving a single
parent that results in offspring that are genetically identical to the parent
advantages of asexual reproduction Correct Answer: faster reproduction, only
need 1 indivudual
heterozygous Correct Answer: having two different alleles for a trait
, disadvantages for asexual reproduction Correct Answer: lacks genetic variation,
same weaknesses, if environment changes there may not be time to adapt
quick enough
advantages of sexual reproduction Correct Answer: genetic variation
disadvantages of sexual reproduction Correct Answer: slower process, less
population growth, requires long-term energy use
homozygous dominant Correct Answer: organisms with two copies of the
functional gene
can never pass on the lethal recessive
trait
carriers Correct Answer: organisms with one functional gene and one non-
functional gene can pass the gene onto their offspring
chromosome 21 Correct Answer: down syndrome
mutation in genes Correct Answer: change involving the nucleotides of DNA
what is the ultimate cause of cancer? Correct Answer: genetic mutations in
DNA
crossing over occurs during Correct Answer: prophase I of meiosis I
negative mutation Correct Answer: a mutation that harms an organism
silent mutation Correct Answer: alters a base but does not change the amino
acid
positive mutation Correct Answer: a mutation that benefits an organism
