BIO 340 Exam 2 - Questions with Verified Answers| Latest Update Graded A+
If black and white true-breeding mice are mated and the result is all gray offspring, what
inheritance pattern would this be indicative of? incomplete dominance
ABO blood groups are an example of: multiple alleles and codominance
Could an individual with blood type O (genotype ii) be a legitimate child of parents in which one
parent had blood type A and the other parent had blood type B? yes, if each parent carries
one i allele
A white splashed (BI/BI) Andalusian chicken and a black (bI/bI) Andalusian chicken are crossed.
The heterozygous produced show an intermediate phenotype (blue). What inheritance pattern
would this be indicative of? incomplete dominance
A person with only one sickle cell anemia allele and one unaffected allele will have some
normal red blood cells and some abnormal. What inheritance pattern would this be indicative
of? codominance
In a mating between two individuals that are heterozygous for a recessive lethal allele that is
expressed in uteru, what genotypic ratio (homozygous dominant: heterozygous: heterozygous
recessive) would you expect to observe in the offspring? 1:2:0
In rats, gene B produces black coat color if the genotype is B-, but black pigment is not
produced if the genotype is bb. At an independent locus, gene D produces yellow pigment if the
genotype is D-, but no pigment is produced when the genotype is dd. Production of both
pigments results in brown coat color. If neither pigment is produced, coat color is cream. The
phenotype of parents of litters with the following phenotype distribution 3 brown, 3 yellow, 1
black, 1 cream is: BbDd x bbDd
In rats, gene B produces black coat color if the genotype is B-, but black pigment is not
produced if the genotype is bb. At an independent locus, gene D produces yellow pigment if the
genotype is D-, but no pigment is produced when the genotype is dd. Production of both
If black and white true-breeding mice are mated and the result is all gray offspring, what
inheritance pattern would this be indicative of? incomplete dominance
ABO blood groups are an example of: multiple alleles and codominance
Could an individual with blood type O (genotype ii) be a legitimate child of parents in which one
parent had blood type A and the other parent had blood type B? yes, if each parent carries
one i allele
A white splashed (BI/BI) Andalusian chicken and a black (bI/bI) Andalusian chicken are crossed.
The heterozygous produced show an intermediate phenotype (blue). What inheritance pattern
would this be indicative of? incomplete dominance
A person with only one sickle cell anemia allele and one unaffected allele will have some
normal red blood cells and some abnormal. What inheritance pattern would this be indicative
of? codominance
In a mating between two individuals that are heterozygous for a recessive lethal allele that is
expressed in uteru, what genotypic ratio (homozygous dominant: heterozygous: heterozygous
recessive) would you expect to observe in the offspring? 1:2:0
In rats, gene B produces black coat color if the genotype is B-, but black pigment is not
produced if the genotype is bb. At an independent locus, gene D produces yellow pigment if the
genotype is D-, but no pigment is produced when the genotype is dd. Production of both
pigments results in brown coat color. If neither pigment is produced, coat color is cream. The
phenotype of parents of litters with the following phenotype distribution 3 brown, 3 yellow, 1
black, 1 cream is: BbDd x bbDd
In rats, gene B produces black coat color if the genotype is B-, but black pigment is not
produced if the genotype is bb. At an independent locus, gene D produces yellow pigment if the
genotype is D-, but no pigment is produced when the genotype is dd. Production of both
