BIO 340 EXAMS 1 ALL ANSWERS AND QUESTIONS
SET A+
✔✔Your chromosomes are located _______ and they are made of ___________ . -
✔✔inside the nucleus, DNA
✔✔A nucleotide is made of _______. - ✔✔sugar + phosphate + nitrogen base
✔✔A molecule of RNA (ribonucleic acid) contains the bases _______. - ✔✔adenine,
guanine, cytosine, and uracil
✔✔Which of the following does cytosine pair with? - ✔✔Guanine
✔✔Prokaryotes contain a _________ chromosome, and eukaryotes contain ________
chromosomes. - ✔✔double-stranded circular; double stranded linear
✔✔How long would the peptide be that is translated from this mRNA sequence: 5'-
AUGGGCUACCGA -3'? - ✔✔4 amino acids
✔✔What is the correct sequence of steps in the central dogma? - ✔✔DNA->RNA-
>Protein
✔✔Where does transcription take place in human cells? - ✔✔Nucleus
✔✔Where does translation take place in eukaryotic cells? - ✔✔Cytoplasm
✔✔Transcribe the following DNA sequence (non template strand): 5'-
ATGGCCGGTTATTAAGCA-3' - ✔✔5'-AUGGCCGGUUAUUAAGCA-3'
✔✔In which of the following pairs do both evolutionary processes introduce new genetic
variation into a population? - ✔✔Mutation and gene flow
, ✔✔Mutation can be defined as the addition of genetic variation that increases the
hereditary diversity of a population. - ✔✔True
✔✔If an allele has a frequency of 1: - ✔✔It is found in 100% of the population
✔✔When male lions reach sexual maturity, they leave their group in search of a new
pride. This can alter the allele frequencies of the population through which of the
following mechanisms? - ✔✔Gene flow
✔✔When closely related individuals mate with each other, or inbreed, the offspring are
often not as fit as the offspring of two unrelated individuals. Why? - ✔✔Inbreeding can
bring together rare, deleterious mutations that lead to harmful phenotypes.
✔✔Which statement about analogies is correct?
a. They occur only as errors.
b. They are synonymous with homologous traits.
c. They are derived by similar environmental constraints.
d. They are a form of mutation. - ✔✔C
✔✔What do scientists use to apply cladistics? - ✔✔homologous traits
✔✔What is true about organisms that are a part of the same clade?
a. They all share the same basic characteristics.
b. They evolved from a shared ancestor.
c. They usually fall into the same classification taxa.
d. They have identical phylogenies. - ✔✔B
✔✔Why do scientists apply the concept of maximum parsimony? - ✔✔to decipher
accurate phylogenies
✔✔Alternate forms of a gene are called _______. - ✔✔alleles
✔✔Describing a person as having hemophilia is to indicate his or her ______. -
✔✔phenotype
✔✔Why do your chromosomes come in pairs? - ✔✔Because one member of each pair
came from my mother and the other from my father.
✔✔How did Mendel get the peas to cross-fertilize? - ✔✔He kept them apart and
pollinated them by hand.
✔✔The observable traits expressed by an organism are described as its ________. -
✔✔phenotype
SET A+
✔✔Your chromosomes are located _______ and they are made of ___________ . -
✔✔inside the nucleus, DNA
✔✔A nucleotide is made of _______. - ✔✔sugar + phosphate + nitrogen base
✔✔A molecule of RNA (ribonucleic acid) contains the bases _______. - ✔✔adenine,
guanine, cytosine, and uracil
✔✔Which of the following does cytosine pair with? - ✔✔Guanine
✔✔Prokaryotes contain a _________ chromosome, and eukaryotes contain ________
chromosomes. - ✔✔double-stranded circular; double stranded linear
✔✔How long would the peptide be that is translated from this mRNA sequence: 5'-
AUGGGCUACCGA -3'? - ✔✔4 amino acids
✔✔What is the correct sequence of steps in the central dogma? - ✔✔DNA->RNA-
>Protein
✔✔Where does transcription take place in human cells? - ✔✔Nucleus
✔✔Where does translation take place in eukaryotic cells? - ✔✔Cytoplasm
✔✔Transcribe the following DNA sequence (non template strand): 5'-
ATGGCCGGTTATTAAGCA-3' - ✔✔5'-AUGGCCGGUUAUUAAGCA-3'
✔✔In which of the following pairs do both evolutionary processes introduce new genetic
variation into a population? - ✔✔Mutation and gene flow
, ✔✔Mutation can be defined as the addition of genetic variation that increases the
hereditary diversity of a population. - ✔✔True
✔✔If an allele has a frequency of 1: - ✔✔It is found in 100% of the population
✔✔When male lions reach sexual maturity, they leave their group in search of a new
pride. This can alter the allele frequencies of the population through which of the
following mechanisms? - ✔✔Gene flow
✔✔When closely related individuals mate with each other, or inbreed, the offspring are
often not as fit as the offspring of two unrelated individuals. Why? - ✔✔Inbreeding can
bring together rare, deleterious mutations that lead to harmful phenotypes.
✔✔Which statement about analogies is correct?
a. They occur only as errors.
b. They are synonymous with homologous traits.
c. They are derived by similar environmental constraints.
d. They are a form of mutation. - ✔✔C
✔✔What do scientists use to apply cladistics? - ✔✔homologous traits
✔✔What is true about organisms that are a part of the same clade?
a. They all share the same basic characteristics.
b. They evolved from a shared ancestor.
c. They usually fall into the same classification taxa.
d. They have identical phylogenies. - ✔✔B
✔✔Why do scientists apply the concept of maximum parsimony? - ✔✔to decipher
accurate phylogenies
✔✔Alternate forms of a gene are called _______. - ✔✔alleles
✔✔Describing a person as having hemophilia is to indicate his or her ______. -
✔✔phenotype
✔✔Why do your chromosomes come in pairs? - ✔✔Because one member of each pair
came from my mother and the other from my father.
✔✔How did Mendel get the peas to cross-fertilize? - ✔✔He kept them apart and
pollinated them by hand.
✔✔The observable traits expressed by an organism are described as its ________. -
✔✔phenotype
