Bio 111 genetics
Part 3 of 3:What is the chance that Winnie's blood type will be B?
0%
In humans, the condition for normal blood clotting (H) is dominant to hemophilia (h). A male who has normal blood clotting mates with a woman who is a carrier. If they have a daugher, what is the probability that she will have this condition?
0% The XHY x XHXh results in daughters that are either XHXH or XHXh (neither of which have the condition).
In humans, there are 3 alleles for blood type: A, B, O. A and B are co-dominant over O. A male with O type blood mates with a female with AB type blood. What is the chance that their child will be heterozygous
100%
Red flower color is incompletely dominant to white flower color. Two red flowers are crossed. What percentage of their offspring will be red?
100%
Part 3 of 3: What percentage of the puppies will be brown?
25% The male is eebb: ee because he is yellow, and bb because both his parents were brown. The female is EeBb. (We know she has at least one E allele because she is black, and she must be Ee because her mother was yellow, which implies ee. We also know the black female dog has a B allele because she has black fur, and a b because her father was brown.) EeBb x eebb results in 25% EeBb (black), 25% Eebb (brown), 25% eeBb (yellow) and 25% eebb (yellow).
part 2 of 3: What percentage of the puppies will be black?
25% The male is eebb: ee because he is yellow, and bb because both his parents were brown. The female is EeBb. (We know she has at least one E allele because she is black, and she must be Ee because her mother was yellow, which implies ee. We also know the black female dog has a B allele because she has black fur, and a b because her father was brown.) EeBb x eebb results in 25% EeBb (black), 25% Eebb (brown), 25% eeBb (yellow) and 25% eebb (yellow).
Two heterozygous individuals have mated. How many different genotypes can be present in the offspring?
3 Crossing Aa with Aa produces the following possible offspring: AA, Aa, aa.
Plum gametes have 24 chromosomes. How many chromosomes would a zygote have?
48
Part 2 of 3: What is the chance that Winnie's blood type will be A?
50%
Red flower color is incompletely dominant over white flower color. If a red flower is crossed with a pink flower, what percentage of the offspring will be pink?
50%
Red flower color is incompletely dominant over white flower color. If two pink flowers are crossed, what percentage of their offspring will be pink?
50%
Sickle cell anemia is an autosomal recessive disorder. A person with the disorder and a person that is a carrier mate. What is the chance that their offspring will develop sickle cell anemia?
50%
In dogs, colored fur, E, is dominant over colorless fur, e. Black fur color, B, is dominant over brown fur color, b. The E gene is epistatic to the B gene. Suppose a yellow male dog is mated with a black female. The male's parents were both brown. The female's mother was yellow, and her father was brown. Part 1 of 3: What percentage of the puppies will be yellow?
50% The male is eebb: ee because he is yellow, and bb because both his parents were brown. The female is EeBb. (We know she has at least one E allele because she is black, and she must be Ee because her mother was yellow, which implies ee. We also know the black female dog has a B allele because she has black fur, and a b because her father was brown.) EeBb x eebb results in 25% EeBb (black), 25% Eebb (brown), 25% eeBb (yellow) and 25% eebb (yellow).
In humans, there are three alleles for blood type: A, B, and O. A and B are codominant over O. Suppose Jim, a man with type A blood, and Leah, a woman with type B blood, have a child, Winnie. Jim's parents both have blood type AB. Leah's mother has type B, and her father has type O. Part 1 of 3: What is the probability that Winnie's blood type will be AB?
50% We know Jim is AA, because he has blood type A and both of his parents have AB. Leah's genotype is BO, because her mother is B and her father was OO. AA x BO produces 50% offspring with AB type blood and 50% offspring with an AO genotype, which results in type A blood.
A gene that encodes an enzyme required for ribose synthesis is found on the X chromosome. Females that are heterozygous for the wild-type and defective mutant allele of this gene will show:
50% of their cells will lack enzymatic activity, the other 50% will be active.
The sister chromatids separate during which stage of meiosis?
Anaphase II
describe the importance of independent assortment
Chromosomes in meiosis assort independently, therefore the genes on separate chromosomes will assort independently.
Genotypes provide information about
DNA
In humans, the condition for normal blood clotting (H) is dominant to hemophilia (h). A male who has normal blood clotting mates with a woman who is a carrier. If they have a son, what is the probability that he will have this condition
The XHY x XHXh results in 50% of sons that are XHY (and do not have the condition) and 50% that are XhY (and do have the condition).
In dogs, colored fur (E) is dominant to un-colored fur (e). Black fur color (B) is dominant to brown fur color (b). The E gene is epistatic to the B gene. A brown male dog is mated to a black female. Both the male and female are homozygous at all loci. What percentage of the puppies will be black?
The male is EEbb and the female is EEBB. EEbb x EEBB result in 100% puppies that are EEBb (black).
What would be the result of fertilization if egg and sperm were produced by mitosis rather than meiosis?
The resulting offspring would have twice as much DNA as the parents
In humans females are
XX
A genetic disorder that is sex-linked cannot also be
autosomal
A heterozygous germ cell undergoes meiosis. The gametes will...
either have the dominant or the recessive allele
Hydrangeas are blue in acidic soil with available aluminum, and they are pink in alkaline soil without available aluminum, but they cannot be orange under any soil condition. The color of hydrangeas is affect by
genetics and environment
human height is effected by...
genetics and environment
Protein is to phenotype as DNA is to
genotype
Homozygous is a term that can describe...
genotypes homozygous genotype is one in which the individual has two of the same alleles.
Traits that are sex-linked and recessive are...
more common in males
linked genes are found
on the same chromosome
A homozygous dominant germ cell undergoes meiosis. The gametes will...
only have the dominant allele
What organism did Mendel study
peas
phenotypes provide information about
proteins
A nucleus is built around chromatids which have separated. This occurs during which stage of meiosis?
telophase II
The sex of the offspring is determined by...
the father
Nondisjunction in meiosis I results in
two cells missing a chromosome and two cells with an additional chromosome