Homework Answers
The alleles A and B are dominant and also the Rh - positive (indicated by '+' sign) is dominant. This means The groups with dominant alleles like AB+ and A+ are dominant and homozygous. In B-, the allele B is dominant over Rh - negative and is heterozygous. But the allele O and Rh - negative both are recessive and homozygous. The options 2,4 and 5 are correct.
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Question 26 1 pts In blood typing, alleles A and B and Rh-positive are dominant. Alleles...
1.)If the population frequencies of two alleles at a locus are B = 0.5 and b...
1.)If the population frequencies of two alleles at a locus are B = 0.5 and b = 0.5, what is onepossible set of frequencies for the three resulting genotypes that would NOT reflect Hardy- Weinberg equilibrium? 2.)In a population that is in Hardy-Weinberg equilibrium, the frequency of the homozygous recessive genotype is 0.09. What is the frequency of individuals that are homozygous for the dominant allele? 3.)In humans, Rh-positive individuals have the Rh antigen on their red blood cells, while...
Flower color is incompletely dominant in snapdragons. If a white-flowered plant (WW) is crossed with a...
Flower color is incompletely dominant in snapdragons. If a white-flowered plant (WW) is crossed with a red-flowered plant (RR), all of the offspring are pink (RW). What is the probability of getting pink-flowered offspring from two pink-flowered parents? Show your work. 1 point Probability of getting pink-flowered offspring: __________________ % Reminders about human blood type genetics. • ABO blood types o A and B alleles are co-dominant o A allele is dominant to O allele o B allele is dominant...
Background for Discussion: Blood type is determined by the "alleles" that are inherited from the parents Al...
Background for Discussion: Blood type is determined by the "alleles" that are inherited from the parents Alleles are possible types of a particular gene, in this case the blood type gene. There are four main blood types A, B, AB, or O; and three basic type alleles A, B, and O. Children have two alleles, one inherited from each parent. Blood types A and B are called co-dominant alleles, while type O represents the absence of a factor and is...
A woman has type A blood that is Rh-negative. Her father, however, had type B blood...
A woman has type A blood that is Rh-negative. Her father, however, had type B blood that was Rh-positive. She marries a man who is AB positive, but his mother was Rh-negative. I know that the allele for Rh positive blood is dominant (R) over the allele for Rh-negative blood (r). But I am having trouble with a 4x4 Punnett square which I am sure would be essential to solving this! I appreciate any help you could give! 1. What...
8) There is a blood type gene with three alleles A, B and O. A is dominant...
8) There is a blood type gene with three alleles A, B and O. A is dominant to O, B is dominant to O and A and B are co-dominant/incompletely dominant. What are the likely genotypes if a mother has the genotype AA and the father has the genotype BO? Group of answer choices a) 50% AA 50% BB b) 50% Ab blood 50% A blood c) 25% AB, 25% AO, 50% OO d) 50% AB 50% AO 9) There is...
There are three main alleles in the ABO blood group system - IA, IB, and i....
There are three main alleles in the ABO blood group system -
IA, IB, and i. We've talked about the ABO
system in class, you can find a brief explanation below and
here.
The I gene encodes for a glycosyltransferase
that modifies at the H antigen.
The glycosyltransferase encoded by IA adds an 'A'
sugar group to antigen H, the glycosyltransferase encoded by
IB adds a 'B' sugar group and i encodes an inactive
glycosyltransferase that leaves the H antigen...
In simple Mendelian inheritance alleles display a simple dominant/recessive relationship. There are many exceptions to Mendelian...
In simple Mendelian inheritance alleles display a simple dominant/recessive relationship. There are many exceptions to Mendelian laws of inheritance. Most genes have more than two allelic forms and do not exhibit simple Mendelian inheritance. The human ABO antigens are an example of a multiple allelic trait. There are three ABO blood group antigens, IA, IB and i. The i allele is recessive to both IA and IB. A person who is homozygous ii has type O blood and does not...
0 b) 0.21 c) 0.42 d) 0.49 e) 0.91 Problem 3: in humans, Rh-positive individuals have...
0 b) 0.21 c) 0.42 d) 0.49 e) 0.91 Problem 3: in humans, Rh-positive individuals have the Rh antigen on their red blood cells, while Rh. negative individuals do not. If the Rh-positive phenotype is produced by a dominant gene (A), and the Rh negative phenotype is due to its recessive ailele (a). what is the frequency of the Rh-positive allele if 84% of a population is Rh-positive? a) 0.04 b) 0.16 c) 0.48 d) 0.60 e) 0.84 Problem 4:...
A mother with Rh negative blood has a baby with Rh positive blood. She get pregnant...
A mother with Rh negative blood has a baby with Rh positive blood. She get pregnant a second time with Rh positive baby what will occur? A. Nothing will happen this is normal. B. A type III hypersensitivity reaction will occur building up in the baby's organs. C. A type II hypersensitivity reaction will occur leading to lysis of the baby's blood. OD. A type I hypersensitivity reaction will occur in the mother lead to anaphylactic shock. QUESTION 6 Myasthenia...
A and B are codominant over O in the ABO blood system. Another common way to...
A and B are codominant over O in the ABO blood system. Another common way to type blood is with the Rh factor, in which Rh positive is dominant over Rh negative. A toddler has B positive blood. The mother has A negative blood. Potential father #1 has O positive blood. Potential father #2 has B negative blood. Potential father #3 has AB positive blood. Who is the child's father and why?
Background for Discussion: Blood type is determined by the "alleles" that are inherited from the parents Alleles are possible types of a particular gene, in this case the blood type gene. There are four main blood types A, B, AB, or O; and three basic type alleles A, B, and O. Children have two alleles, one inherited from each parent. Blood types A and B are called co-dominant alleles, while type O represents the absence of a factor and is...
There are three main alleles in the ABO blood group system -
IA, IB, and i. We've talked about the ABO
system in class, you can find a brief explanation below and
here.
The I gene encodes for a glycosyltransferase
that modifies at the H antigen.
The glycosyltransferase encoded by IA adds an 'A'
sugar group to antigen H, the glycosyltransferase encoded by
IB adds a 'B' sugar group and i encodes an inactive
glycosyltransferase that leaves the H antigen...
0 b) 0.21 c) 0.42 d) 0.49 e) 0.91 Problem 3: in humans, Rh-positive individuals have the Rh antigen on their red blood cells, while Rh. negative individuals do not. If the Rh-positive phenotype is produced by a dominant gene (A), and the Rh negative phenotype is due to its recessive ailele (a). what is the frequency of the Rh-positive allele if 84% of a population is Rh-positive? a) 0.04 b) 0.16 c) 0.48 d) 0.60 e) 0.84 Problem 4:...
A mother with Rh negative blood has a baby with Rh positive blood. She get pregnant a second time with Rh positive baby what will occur? A. Nothing will happen this is normal. B. A type III hypersensitivity reaction will occur building up in the baby's organs. C. A type II hypersensitivity reaction will occur leading to lysis of the baby's blood. OD. A type I hypersensitivity reaction will occur in the mother lead to anaphylactic shock. QUESTION 6 Myasthenia...
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