Multiple Choice QuestionsThe joint of radio-ulna with the upper arm is
hinge joint
pivot joint
socket joint
none of these
A man of blood group 'A', marries a woman of blood group 'B', both of them are heterozygous for blood group, chances of their first child having blood group AB will be
25%
50%
75%
100%
Which one of the following is vestigeal organ of human
Hair
Intestine
Wisdom teeth
Muscle of glottis
Which of the following pairs is correctly matched
Central dogma- Codon
Okazaki fragments - Splicing
RNA polymerase -RNA primer
Restriction enzymes - Genetic engineering
D.
Restriction enzymes - Genetic engineering
Restriction enzyme recognises specific nucleotide sequences in DNA and then makes a double-stranded cleavage of DNA molecule. Restriction enzymes are called genetic scissors as they slice off genes and is recently being used in gene therapy technique. They are key tool of genetic engineering. Central dogma is related with protein synthesis. Okazaki fragments are found during DNA synthesis and RNA polymerase is used in synthesis of RNA.
Stanley Miller performed an experiment to prove the origin of life. They took gases NH3 and H2 along with
N2 and H2O
H2O and CH4
CH4 and N2
CO2 and NH3
If the pollen tube enters the ovule through funiculus, the phenomenon is known as
porogamy
chalazogamy
mesogamy
heterogamy
Which of the following is the most resistant material in pollen grain
Sporopollenin
Intine
Exine
Certicle
Switch
