Yes, DNA is present in fingernails. It can be used to do genetic analysis. Nail clippings are non-invasive and more convenient source of DNA for... View Article
Neutral drift is the accumulation of mutations, which do not show any effect in the present condition. It does not affect the survival or... View Article
Klinefelter syndrome is not inherited. It occurs due to random error during cell division leading to an extra X chromosome. People with... View Article
Less than two percent of human genome codes for proteins. There are around 30,000 genes present in the human genome. Further reading: DNA... View Article
The XYY syndrome is caused due to aneuploidy of sex chromosome. Most of the XYY (47 chromosomes) males are fertile despite having abnormalities... View Article
Klinefelter syndrome is a type of trisomy of the sex chromosome. It is caused due to nondisjunction of chromosomes during cell division. They... View Article
Genetic drift refers to the random fluctuation in the allele frequencies in a population due to chance events. In a small population it can... View Article
Turner syndrome is characterized by the presence of one X chromosome in females. It is a type of aneuploidy, where one chromosome is missing.... View Article
Sexually dimorphic or intersex condition is knonw as hermaphrodite. True hermaphrodites are born with both ovarian and testicular tissues.... View Article
The size of the genome does not necessarily increase with an increase in the complexity of organisms. This is referred to as ‘C paradox’. E.g. a... View Article
During the follicular phase of the menstrual cycle, the primary follicle in the ovary grows to become a mature Graafian follicle. Maturation of... View Article
Sex of a person is determined by the pair of sex chromosomes. Females have a pair of X chromosome (XX) and males have X and Y chromosome, i.e.... View Article
Adaptive radiation refers to the rapid evolution of various different species from a common parent species. It leads to speciation. Adaptive... View Article
Yes, the most common type of colour blindness is a sex linked hereditary disorder. It is a X-linked recessive disorder. The disease mostly... View Article
Colour blindness is X-linked recessive disorder. Females can be colour blind but for that they have to inherit both the affected genes. The... View Article
Bottlenecks are caused when a catastrophic event drastically reduces the population size. It reduces the genetic diversity in a population and... View Article
Jacob’s Syndrome is a genetic condition with an extra Y chromosome. It is a rare disease, which affects 1 in 1000 male children. Men with Jacob’s... View Article
The genetic code is degenerate, i.e. one amino acid is coded by more than one codon. Francis Crick proposed the wobble hypothesis to explain the... View Article
Genetic variation is the main driving force of natural selection and evolution. Genetic variations help the population survive in the changing... View Article
Yes, genetic code is continuous and non-overlapping. Genetic code is the trinucleotide sequence present on the mRNA transcript, which codes for a... View Article
