Satellite DNA consists of highly repetitive and generally non-coding DNA. It is very significant in DNA fingerprinting for the following reasons:
i. It shows high degree of polymorphism which forms the basis of DNA fingerprinting
ii. Different tissues in the body show the same degree of polymorphism and thus are useful as an identification tool in the forensic application.
iii. They are inheritable from parents to offsprings and can be used for paternity testing.
During a monohybrid cross involving a tall pea plant with a dwarf pea plant, the offspring populations were tall and dwarf in equal ratio. Work out a cross to show how is it possible.
A heavily bleeding and bruised road accident victim was brought to a nursing home. The doctor immediately gave him an injection to protect him against a deadly disease.
(a) Write what did the doctor inject into the patient's body.
(b) How do you think this injection would protect the patient against the disease?
(c) Name the disease against which this injection was given and the kind of immunity it provides.
Rearrange the following in the current sequences to accomplish an important biotechnological reaction :
(a) In vitro synthesis of region of DNA of interest
(b) Chemically synthesized oligonucleotides
(c) Enzyme DNA-polymerase
(d) Complementary region of DNA
(e) Genomic DNA template
(f) Nucleotides provided
(g) Primers
(h) Thermostable DNA-polymerase (from Thermus aquaticus)
(i) Denaturation of ds-DNA
