In humans, height shows a lot of variation. It is an example of
In humans, height shows a lot of variation. It is an example of
The correct option is C Polygenic inheritance
A.Multiple
alleles - Presence of more than two alleles for a gene is called Mutliple
alleles. These are present on the same locus of homologous chromosomes. eg: ABO
blood group in Man
B.Pleiotropic
inheritance – The ability of a gene to have
a multiple phenotypic effects is known as pleiotrophy and the gene is called
Pleiotropic gene and the inheritance is called Pleiotropic inheritance.
eg:Sickel
cell anaemia
C.Polygenic
inheritance – Inheritance is controlled by two or more genes in which the
dominant alleles have cumulative effect, with each dominant allele expressing a
part of functional polypeptide and full trait is shown when all the dominant
alleles are present, is called Polygenic or Quantitative inheritance. Eg:Human
height, skin colour.
D.Pseudoalleles
– Genes are present together side by side and they produce related phenotypes
are called pseudoalleles. These are distinguished from true alleles through
rare crossing over.
So,
the correct option is ‘polygenic inheritance’.
A.Multiple alleles - Presence of more than two alleles for a gene is called Mutliple alleles. These are present on the same locus of homologous chromosomes. eg: ABO blood group in Man
B.Pleiotropic inheritance – The ability of a gene to have a multiple phenotypic effects is known as pleiotrophy and the gene is called Pleiotropic gene and the inheritance is called Pleiotropic inheritance.
eg:Sickel cell anaemia
C.Polygenic inheritance – Inheritance is controlled by two or more genes in which the dominant alleles have cumulative effect, with each dominant allele expressing a part of functional polypeptide and full trait is shown when all the dominant alleles are present, is called Polygenic or Quantitative inheritance. Eg:Human height, skin colour.
D.Pseudoalleles – Genes are present together side by side and they produce related phenotypes are called pseudoalleles. These are distinguished from true alleles through rare crossing over.
So, the correct option is ‘polygenic inheritance’.
