Haemophilia is caused by
Extra autosome
Extra sex-chromosome
Gene mutation in sex-chromosome
Gene mutation in autosome
In which of the following diseases, man has got an extra X-chromosome?
Bleeder’s disease
Down’s syndrome
Turner’s syndrome
Klinefelter’s syndrome
The science of fingerprints was discovered by chance during a murder investigation in
China
Japan
India
USA
The DNA fingerprints or DNA profiles are the
Dark bands on X-ray
Differently stained DNA probes
Different DNA segments on electrophoretic film
Different DNA molecules
The cell without nuclei is present in:
vascular cambium
root hair
companion cell
members of sieve tube
Heteropycnosis is exhibited by:
autosome
chromatoid body
nucleolus
sex –chromosome
What kind of evidence suggested that man is more closely related with chimpanzee than with other hominoid apes?
Comparison of chromosomes morphology only
Evidence from fossil remains and the fossil mitochondrial DNA alone.
Evidence from DNA extracted from sex chromosome, Autosome & mitochondria.
Evidence from DNA from sex chromosome only.
ringer soiution contain?
length of minor groove is-