Inheritance of skin colour in human is controlled by three pairs of genes, A,B and C which is polygenic inheritance. Codominance is shown by Blood group AB. Chromosomal aberration and point mutation change the genetic sequence of human genome. Related Theory Polygenic inheritance refers to the kind of inheritance in which the trait is produced from the cumulative effects of many genes in contrast to monogenic inheritance in which the trait results from the expression of one gene (or one gene pair). Polygenic inheritance is a Non-Mendelian form since it is controlled by multiple genes at different loci on different chromosomes expressed together in the same trait. Some examples of polygenic inheritance are: human skin and eye colour; height, weight and intelligence in people; and kernel colour of wheat.
Inheritances of skin colour on humans is an example of:
NEET UG 2007 — Zoology Principles of Inheritance and Variation
Inheritances of skin colour on humans is an example of:
Held on 30 Apr 2007 · Verified 9 Jul 2026.
Options
- A
point mutation
- B
polygenic inheritance
- C
codominance
- D
chromosomal aberration.
Did you get this right?
Sign in to track your attempts and accuracy.
Your note
Sign in to keep a private note on this question. Nothing you write is ever public.
NEET UG Principles of Inheritance and Variation in other years
More NEET UG Principles of Inheritance and Variation questions
What is the pattern of inheritance for polygenic trait?
With the help of given pedigree, find out the probability for the birth of a child having no disease and being a carrier (has the disease mutation in one allele of the gene) in $F_3$ generation. 
Genes $R$ and $Y$ follow independent assortment. If RRYY produce round yellow seeds and rryy produce wrinkled green seeds, what will be the phenotypic ratio of the F2 generation?
When a tall pea plant with round seeds was selfed, it produced the progeny of : (a) Tall plants with round seeds and (b) Tall plants with wrinkled seeds. Identify the genotype of the parent plant.
Given below are two statements: Statement I: Failure of segregation of chromatids during cell cycle resulting in the gain or loss of whole set of chromosome in an organism is known as aneuploidy. Statement II: Failure of cytokinesis after anaphase stage of cell division results in the gain or loss of a chromosome is called polyploidy. In the light of the above statements, choose the correct answer from the options given below:
Other Zoology topics for NEET UG
Keep practicing Principles of Inheritance and Variation
Work through every NEET UG Principles of Inheritance and Variation PYQ, year by year.