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
$a, c$ and$e$
$a, b$ and $c$
$b, d$ and $e$
$b, c$ and $e$
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 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 |
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.
Doctor's son
Match the following columns.
Column $- I$ | Column $- II$ |
$(w)$ Blood group | $(a)$ Polygenic inheritance |
$(x)$ Skin colour | $(b)$ Aneuploidy |
$(y)$ Mendelian disorder | $(c)$ Incomplete dominance |
$(z)$ Chromosomal disorder | $(d)$ Sickle-cell anaemia |
$(e)$ Co-dominance |