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ABO blood groups in humans are controlle...

ABO blood groups in humans are controlled by the gene I. It has three alleles - IA, IB and i. Since there are three different alleles, six different genotypes are possible. How many phenotypes can occur?

A

Three

B

One

C

Four

D

Two

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ABO blood groups in human beings are controlled by the gene I . The gene I has three alleles - I^(A),I^(B) and i . Since there are three different alleles, six different genotypes are possible How many phenotypes can occur ?

Three alleles namely 1^ A , I^B , and i control the blood grouping in human beings. How many different genotypes are likely to be present in the human population?

Knowledge Check

  • The ABO blood grouping in human beings is an example for i. Dominance ii . Incomplete dominance iii. Co-dominance iv. Multiple alleles

    A
    i and ii only
    B
    ii, iii and iv
    C
    i, ii and iv
    D
    iii and is only

  • 'Trihybrid Cross'' Cross between homozygous parents that differ in three pairs of contrasting characters. It forms 8 different gametes and 64 different zygotes. Single phenotype is controlled by more than one set of genes. It demonstrates the Mednel's laws are applicable to the inheritance of multiple traits.

    A
    I and III
    B
    I and II
    C
    I,II and Iv
    D
    II,III and IV

  • Assertion : ABO Blood grouping is based on multiple alleles. Reason : There are 6 possible genotypes and 4 possible blood types

    A
    A and R are true, R is the correct explanation of A.
    B
    A and R are true, R is not the correct explanation of A.
    C
    A is true, R is false.
    D
    Both A and R are false.

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    In man, four types of blood groups A, B, AB and O are controlled by three alleles of a gene. Name the type of inheritance involved in blood group.

    The genotypes of a Husband and Wife are [^A]^B and I^Ai Among the blood types of their children, how many different genotypes and phenotypes are possible?

    The genotypes of a husband and wife are I^AI^B and I^AI^O . Among the blood types of children, how many different genotypes and phenotypes are possible?

    (i) A kabaddi coach has 14 players ready to play. How many different teams of 7 players could the coach put on the court? (ii) There are 15 persons in a party and if , each 2 of them shakes hands wit each with each other. How many handshakes happen in the party? (iii) How many chords can be drawn through 20 points on a circle? (iv) In a parking lot one hunderd, one year old cars are parked. Out of them five are to be chosen at random for to check its pollution devices. How many different set of five cars are possible? (v) How many ways can a team of 3 boys, 2 girls and 1 transgender be selected from 5 boys, 4 girls and 2 transgender?

    Write the three allelic forms of the gene, controlling blood type? What do they specify?

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