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.

  • A

    $FFTT$

  • B

    $TFFT$

  • C

    $TTFF$

  • D

    $TFTT$

Similar Questions

Select the correct statement:

  • [NEET 2018]

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]

What is the correct sequence of the following events

$1.$Formation of the chromosome theory of heredity

$2.$Experiments which proved that $DNA$ is the hereditary material

$3.$Mendel's laws of inheritance-discovery

Code :

Select incorrect statement

$(A)$ Linked genes cause absolute lethality
$(B)$ Persons affected by $PKU$ do not show mental disorder
$(C)$ $F_{2}$ ratio in codominance and incomplete dominance are same
$(D)$ Sex of male Drosophila is dependent on $Y-$chromosome

Pick out the correct statements.

$(1)$ Haemophilia is a sex­linked recessive disease.

$(2)$ Down’s syndrome is due to aneuploidy.

$(3)$ Phenylketonuria is an autosomal recessive gene disorder.

$(4)$ Sickle cell anaemia is an $X$-­linked recessive gene disorder.

  • [NEET 2016]