In a heterozygote, the allele that is expressed is called dominant and the other allele, whose effect is masked is called recessive. Further... View Article
Phenotype is the observable characteristics, which is the product of genes present such as skin colour, eye colour, presence or absence of... View Article
Genotype is the genetic constituent of an organism, whereas phenotype refers to the observable characteristics that are the result of the... View Article
Punnett square is used to determine the possible genotypes in a breeding experiment. We can calculate the probability of having a genotype in the... View Article
Multiple alleles refer to having more than two alleles for a gene and in any individual any two alleles are present, e.g. gene for ABO blood... View Article
Yes, height is a polygenic trait because it is controlled by more than one gene. It shows a wide variation due to that. Further reading:... View Article
Yes, eye colour is polygenic inheritance. The phenotype is determined by several genes. Further reading: Polygenic Inheritance Chromosome... View Article
Polygenic traits show wide variations and are spread across a gradient such as varying heights and skin colour. Further reading: Polygenic... View Article
The traits showing polygenic inheritance show continuous distribution and have a wide range of possible outcomes. These traits do not show... View Article
Polygenic inheritance refers to the inheritance, where multiple genes affect a single phenotypic trait such as height, eye colour, skin colour,... View Article
Mutation refers to any change in the DNA sequence, which leads to altered genotype and phenotype. Further reading: Chromosome Structure... View Article
There are various diseases caused by point mutation such as sickle cell anaemia, colour blindness, Tay Sachs disease, cancer, etc. Further... View Article
When there is a change in the single base pair in the DNA, it is called a point mutation. Point mutation occurs mostly due to substitution.... View Article
Sickle cell anaemia is a classic example of point mutation. Here, single base substitution at the sixth codon of the beta-globin chain from GAG... View Article
Epistasis is the interaction between non-allelic genes found at different loci. Here one gene masks the phenotypic effect of another gene present... View Article
Yes, albinism is an example of pleiotropy. It is caused by a defect in the single gene, i.e. tyrosinase gene and causes multiple phenotypic... View Article
