Bio 340 Exam 1 Study Guide Questions With Complete
Solutions
0 dominant: 1 recessive Correct Answers Consider a diploid
organism. What is the phenotypic ratio expected to be observed
in the offspring produced by two homozygous recessive parents?
0.05 Correct Answers If a student randomly guesses at five
multiple-choice questions during a BIO 340 exam, find the
probability that the student gets exactly three correct. Each
question has five possible choices. (In this case, number of trials
(n) = 5, number of successes (X) = 3, and the numerical
probability of success (p) = 1/5, since there is one chance in five
of guessing a correct answer.)
0.33 Correct Answers In a cross between two heterozygous
plants (Tt x Tt), what is the probability of a plant being
homozygous given that it is tall?
1 in 16 Correct Answers What is the probability of having 4
girls in a row?
1/2 of the offspring are homozygotes and 1/2 are heterozygotes
Correct Answers Two diploid individuals, one homozygous and
the other heterozygous at a particular gene, make babies. Which
of the following statements about the offspring genotype is
correct? (Hint: draw Punnett squares)
1/3 Correct Answers In guinea pigs coat color is determined by
a single gene with two alleles. A guinea pig from a true-breeding
black strain is mated with a guinea pig from a true-breeding
, white strain. The F1 progeny are all black. Two of the F1
progeny are mated with each other.
What proportion of the black F2 progeny is expected to be
homozygous?
1/4 Correct Answers In guinea pigs coat color is determined by
a single gene with two alleles. A guinea pig from a true-breeding
black strain is mated with a guinea pig from a true-breeding
white strain. The F1 progeny are all black. Two of the F1
progeny are mated with each other.
What proportion of the F2 progeny is expected to be white?
1/32 Correct Answers What is the probability that the
following pair of parents will produce the indicated offspring?
TTRrYy x TtRrYy -> TTrrYY (Use a Punnett Square to solve
for one gene at a time (e.g. TT x Tt) in order to find the
probability of the specific genotype for that gene in the
offspring. Repeat for all the genes and use the multiplication
rule to get the answer for the complete genotype.)
4 Correct Answers How many different types of gametes could
an organism with the genotype AABbCc produce?
4 amino acids Correct Answers How long would the peptide be
that is translated from this mRNA sequence: 5'-
AUGGGCUACCGA -3'?
5'-AUGGCCGGUUAUUAAGCA-3' Correct Answers
Transcribe the following DNA sequence (non template strand):
5'-ATGGCCGGTTATTAAGCA-3'
Solutions
0 dominant: 1 recessive Correct Answers Consider a diploid
organism. What is the phenotypic ratio expected to be observed
in the offspring produced by two homozygous recessive parents?
0.05 Correct Answers If a student randomly guesses at five
multiple-choice questions during a BIO 340 exam, find the
probability that the student gets exactly three correct. Each
question has five possible choices. (In this case, number of trials
(n) = 5, number of successes (X) = 3, and the numerical
probability of success (p) = 1/5, since there is one chance in five
of guessing a correct answer.)
0.33 Correct Answers In a cross between two heterozygous
plants (Tt x Tt), what is the probability of a plant being
homozygous given that it is tall?
1 in 16 Correct Answers What is the probability of having 4
girls in a row?
1/2 of the offspring are homozygotes and 1/2 are heterozygotes
Correct Answers Two diploid individuals, one homozygous and
the other heterozygous at a particular gene, make babies. Which
of the following statements about the offspring genotype is
correct? (Hint: draw Punnett squares)
1/3 Correct Answers In guinea pigs coat color is determined by
a single gene with two alleles. A guinea pig from a true-breeding
black strain is mated with a guinea pig from a true-breeding
, white strain. The F1 progeny are all black. Two of the F1
progeny are mated with each other.
What proportion of the black F2 progeny is expected to be
homozygous?
1/4 Correct Answers In guinea pigs coat color is determined by
a single gene with two alleles. A guinea pig from a true-breeding
black strain is mated with a guinea pig from a true-breeding
white strain. The F1 progeny are all black. Two of the F1
progeny are mated with each other.
What proportion of the F2 progeny is expected to be white?
1/32 Correct Answers What is the probability that the
following pair of parents will produce the indicated offspring?
TTRrYy x TtRrYy -> TTrrYY (Use a Punnett Square to solve
for one gene at a time (e.g. TT x Tt) in order to find the
probability of the specific genotype for that gene in the
offspring. Repeat for all the genes and use the multiplication
rule to get the answer for the complete genotype.)
4 Correct Answers How many different types of gametes could
an organism with the genotype AABbCc produce?
4 amino acids Correct Answers How long would the peptide be
that is translated from this mRNA sequence: 5'-
AUGGGCUACCGA -3'?
5'-AUGGCCGGUUAUUAAGCA-3' Correct Answers
Transcribe the following DNA sequence (non template strand):
5'-ATGGCCGGTTATTAAGCA-3'
