Study 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

213.

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

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