Multiple Choice QuestionsStudy the pedigree chart given below.
what does it show?
Inheritance of a sex-linked inborn error of metabolism like phenylketonuria
Inheritance of a condition like phenylketonuria as an autosomal recessive trait
The pedigree chart is wrong as this is not possible
The pedigree chart is wrong as this is not possible
Which one of the following is the correct matching of three items and their grouping category?
|
Items |
Group |
|
Malleus, incus, cochlea |
Ear ossicles |
|
Items |
Group |
|
IIium, ischium, pubis |
Coxal bones of pelvic girdle |
|
Items |
Group |
|
Actin, myosin, Rhodopsin |
Muscle proteins |
|
Items |
Group |
|
Actin, myosin, Rhodopsin |
Muscle proteins |
Removal of introns and joining the exons in a defined order in transcription unit is called
splicing
tailing
transformation
transformation
Whose experiments cracked the DNA and discovered unequivocally that is genetic code is a triplet?
Nirenberg and Mathaei
Hershey and Chase
Morgan and Sturtevant
Morgan and Sturtevant
select the incorrect statement from the following
Linkage is an exception to the principle of independent assortment in heredity
galactosemia is an inborn error of metabolism
small population size results in a random genetic drift in a population
small population size results in a random genetic drift in a population
Semiconservative replication of DNA was first demonstrated in
Drosophila melanogaster
Escherichia Coli
Streptococcus pneumoniae
Streptococcus pneumoniae
Transgenic plants are
produced by a somatic embryo in an artificial medium
generated by introducing foreign DNA into a cell and regenerating a plant from that cell
Produced by protoplast fusion in the artificial medium
Produced by protoplast fusion in the artificial medium
What is not true for genetic code?
A condon in mRNA is read in a non-contiguous fashion
It is nearly universal
It is degenerate
It is degenerate
A.
A condon in mRNA is read in a non-contiguous fashion
The general features of genetic code are:
(i) The genetic code is written in linear form, using the ribonuclotide bases that compose mRNA molecule as letters.
(ii) Each word of codon consists of three letters, ie, the codon triplet.
(iii) The genetic code inside the cell medium is said to be non-ambiguous.
(iv) The code is degenerate, ie, a given amino acid can be specified by more than one codons.
(v) The codon contains start and stops signals.
(vi) The code is said to be commaless.
(vii) The code is said to be commaless.
Given below is the diagram of a bacteriophage in which one of the options, all the four parts A, B, C and D are correct?
|
A |
B |
C |
D |
|
Tail fibres |
Head |
Sheath |
Collar |
|
A |
B |
C |
D |
|
Sheath |
Collar |
Head |
Tail fibres |
|
A |
B |
C |
D |
|
Head |
Collar |
Sheath |
Tail fibres |
|
A |
B |
C |
D |
|
Head |
Collar |
Sheath |
Tail fibres |
Gel electrophoresis is used for
cutting of DNA into fragments
separation of DNA fragments according to their size
construction of recombinant DNA by joining with cloning vectors
construction of recombinant DNA by joining with cloning vectors
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