Males are more likely to be colour blind than females. Around 1 in 12 males and 1 in 200 females are colour blind in the world. This is because... View Article
Colour blindness is inherited from both parents. It is sex-linked recessive disorder. Genes for red-green colour blindness are present on X... View Article
Colour blind mother means she is homozygous for the defective genes and they are present on both the X-chromosomes. As the son gets his X... View Article
In red-green colour blindness, blue colour appears normal, but when a person has blue-yellow colour blindness then they find it difficult to... View Article
Yes, colour blindness is mostly inherited from parents and is due to defective genes. There is no cure and it is permanent. The acquired colour... View Article
Colour blindness is usually a genetic disorder. A colour blind person fails to discriminate between similar shades and colours. Red-green colour... View Article
Yes, colour blindness is usually caused by a gene defect and is inherited. It is a sex-linked recessive disorder. There is a decreased ability to... View Article
The life expectancy of a colour blind person is normal. There are no other abnormalities associated with the condition. Although there is no cure... View Article
Red-green colour blindness is the most common type of colour blindness and it is X-linked recessive genetic disorder. It is caused due to defects... View Article
Colour blindness is a genetic disorder and cannot be cured. Special glasses and contact lens may help a person perform daily activities.... View Article
Colour blindness is a type X-linked recessive genetic disorder, which results in decreased ability to discriminate between colours. Males are... View Article
Dominance refers to a relationship between two alleles or variants of the same gene, whereas epistasis refers to a relationship between alleles... View Article
Pleiotropy is a condition, when a single gene exhibits multiple phenotypic effects, e.g. mutation in a gene causing phenylketonuria, shows... View Article
Yes, tall is a dominant trait of stem height in the pea plant. Tallness is dominant over dwarfness and expressed in the phenotype of heterozygous... View Article
No, a person cannot be a carrier for a dominant genetic disorder. Dominant genetic disorders require only one copy of a defective gene to develop... View Article
The dihybrid cross between RrYy and RRYY will give all the plants with the phenotype of Round and yellow seed, i.e. all the plants will show the... View Article
The notation Tt means the heterozygous condition, wherein the homologous pair contains different alleles of a gene. One homologous chromosome... View Article
A dominant allele is called dominant because it masks the recessive trait and is expressed in the phenotype of a heterozygous organism. Only a... View Article
Blood group type is controlled by a gene I, which has three alleles IA, IB and i. Allele A and B are dominant over i. Blood type BO is a genotype... View Article
AB positive blood type is called the ‘universal recipient’. It can receive blood from any of the blood types. Further reading: Polygenic... View Article
