How many sentence are correct ?

$(i)$ Every gene contains the information to express a particular trait.

$(ii)$ Gene responsible for $\beta$ - thalassemia is present on $21^{st}$ pair of autosomal chromosome.

$(iii)$ Mendel's approach of using mathematics to explain biological phenomena was totally new and unacceptable to many of the biologists of his time.

  • A

    $0$

  • B

    $2$

  • C

    $1$

  • D

    $3$

Similar Questions

Which of the following is true about linkage

$I.$ It is phenomenon in which more recombinants are produced in $F_{2}$-generation

$II.$ More parental combination are produced in $F_{2}$-generation

$III.$ Genotype which are present in $F_{1}$ hybrid. Reappear in high frequency in $F_{2}$-generation

$IV.$ It is a phenomenon in which two chromosome are linked

Match the Column - $I$ with $II$

Column - $I$ Column - $II$
$(a)$ Pleiotropic gene $(i)$ Both allele express equally
$(b)$ Co-dominance $(ii)$ Change in nucleotide
$(c)$ Epistasis $(iii)$ One gene shows multiple phenotypic expression
$(d)$ Mutation $(iv)$ Rust disease

  • [AIIMS 2019]

Which of the following characteristics represent ‘Inheritance of blood groups’ in humans?
$(a)$ Dominance
$(b)$ Co-dominance
$(c)$ Multiple allele
$(d)$ Incomplete dominance
$(e)$ Polygenic inheritance

  • [NEET 2018]

Choose correct answer :

$(i)$ Queen Elizabeth shows a number of haemophilic descendents.

$(ii)$ Variation in blood group prevalences due to incomplete dominance.

$(iii)$ Drosophila has three pairs of autosomal chromosomes.

$(iv)$ In birds, female is heterozygous.

Match the terms in column $I$ with their description in column $II$ and choose the correct option.

Column $-I$ Column $-II$
$(A)$ Dominance $(i)$ Many genesgovern a single character
$(B)$ Codominance $(ii)$ In a heterozygousorganism only one allele expresses itself
$(C)$ Pleiotropy $(iii)$ In a heterozygousorganism both alleles express themselves fully
$(D)$ Polygenic $(iv)$ A single gene inheritanceinfluences many characters

  • [NEET 2016]