ABO blood groups in humans are controlled by the gene I. It has three alleles - `I^(A), I^(B)` and i. Since there are three different alleles, six dif

Monjur Alahi

ABO blood groups in humans are controlled by the gene I. It has three alleles - `I^(A), I^(B)` and i. Since there are three different alleles, six different grnotypes are possible. How many phenotypes can occur?
A. Three
B. One
C. Four
D. Two


0 like 0 dislike
1 views
Share with your friends

1 Answers

Salim Ahmed Kawsar

Call

Correct Answer - C
The ABO blood group system has at least 6 genotypes. On the basis of presence or absence of antigens and antibodies, four blood groups (phenotypes) have been differentiated-A, B, AB and O blood group. In ABO blood group system, inheritance of grouping is controlled by a single autosomal gene on chromosome 9 with three major alleles A, B and O (`I^(A) , I^(B)` and `I^(O)`).

0 like 0 dislike
1 views
Talk Doctor Online in Bissoy App
Assertion : Bluish colour predominates in a clear sky, since blue has a shorter wavelength and is scattered strongly. Reason : Blue has the shortest w

Correct Answer - C Sky appear blue because blue colour gets scattered strongly. Violet gets scattered even more than blue, having a shorter wavelength. But since our eyes are more sensitive...

2 Answers 1 views
Find the equation of the curve passing through origin if the slope of the tangent to the curve at any point `(x ,y)i s` equal to the square of the dif

Slope of tangent to the curve = `(dy)/(dx)` and difference of abscissa and ordinate = x-y According to the question, `" "(dy)/(dx)=(x-y)^(2)" "`...(i) Put `" "x-y=z` `rArr" "1-(dy)/(dx)=(dz)/(dx)` `rArr" "(dy)/(dx)=1-(dz)/(dx)`...

2 Answers 4 views
There are two die A and B both having six faces. Die A has three faces marked with 1, two faces marked with 2, and one face marked with 3. Die B has o

Correct Answer - C x can be 2, 3, 4, 5, 6. The number of ways in which sum of 2, 3, 4, 5, 6 can occur is given by the...

2 Answers 2 views
There are two die A and B both having six faces. Die A has three faces marked with 1, two faces marked with 2, and one face marked with 1, two faces m

Correct Answer - C The number of ways in which different sums can occurs is (3 + 2 + 1)(1 + 2 + 3) = 36. The probability of 4 is...

2 Answers 1 views
If the probability of a six digit number `N` whose six digit sare 1,2,3,4,5,6 written as random order is divisible by 6 is `p ,` then the value of `1/

Correct Answer - B Total number of cases = n(S) = 6! Now sum the given digits is 1 + 2 + 3 + 4 + 5 + 6 = 21,...

2 Answers 1 views
A person with blood group A required blood. The blood group which can be given is

Correct Answer - C ( c) Blood group A has A antigen and b antibody and blood group O has no antigens and both a and b antibodies so, if...

2 Answers 1 views
A thin uniform copper rod of length l and cross-section area A and mass m rotates uniformly with an angular velocity `omega` in a horizontal plane abo

Correct Answer - C Free expansion of rod = `alphaLDeltatheta=15 xx 10^(-6)xx2(50-20)=15xx10^(-6)xx2xx30=0.9mm` If expansion is fully prevented Strain = `(DeltaL)/(L)=(9xx10^(-4))/(2)=4.5 xx10^(-4)` Thermal stress = (strain)Y = `(4.5 xx 10^(-4))(2xx10^(11))=9xx10^(7)N//m^(2)`

2 Answers 1 views
Name the kind of diseases/disorders and any two symptoms that are likely to occur in humans if: (a) Mutation in the gene that codes for an enzyme phen

(a) Phenylalanine hydroxylase converts amino acid phenylalanine into another amino acid, tyrosine. It due to mutation, phenylalanine hydroxylase (PAH) does not form, Phenylalanine `overset("PAH")rarr` Tyrosine It leads to buildup of...

2 Answers 1 views
(a) Explain the phenomena of multiple allelism and co-dominance taking ABO blood group as an example. (b) What is the phenotype of the following : `(i

(a) Multiple allelism is the phenomenon of occurrence of a gene in more than two allelic forms on the same locus. In ABO blood group in humans one gene I...

2 Answers 1 views
The number of ways in which six boys and six girls can be seated at a round table so that no two girls sit together and two particular girls do not si

Correct Answer - C `(c )` The boys can be seated in `5!` ways. If the girls `g_(1)` and `g_(2)` do not want to sit by the side of `A_(1)` (say)....

2 Answers 1 views
X