Which of the following is true regarding the phase lambda, a virus which infects bacteria?

• In the lytic cycle, the bacterial host replicates viral DNA, passing it on to daughter cells during binary fission

• In the lysogenic cycle, the bacteria-host replicates viral DNA, passing it onto daughter cells during binary fission

• In the lytic cycle, viral DNA is integrated into the host genome

• In the lysogenic cycle, the host bacterial cell burst, releasing phases

The part of the bacterial chromosomes sharing homology with genome fragment transferred from the recipients to cell during emrozygote formation is known as

• Eugenic

• Exogenate

• Endogenate

• Dysgenic

113.

In 1944, Avery, McCarty and MacLeod isolated substance from heat killed a virulent form of bacteria and added to the non-virulent form of bacteria which changed the non-virulent to virulent from this substance can be destroyed by

• DNAse

• Protease

• Lipase

• Amylase

Match the following column I with column II.

Column I	Column II
A. Carcinogen	1. Cancerous Tumour
B. Anaphase -I	2. Disjunction
C. Mitosis	3. Synapse
D. Zygotene	4. Plectonemic Coiling

• A-1, B-2, C-4, D-3

• A-3, B-1, C-4, D-2

• A-2, B-3, C-1, D-4

• A-4, B-1, C-3, D-2

The codon for anticodon 3-UUUA-5' is

• 3-AAU-5

• 5-UAAA-3

• 5-AAAU-3

• 3-UAAU-5'

A kind of biotechnology involving manipulation of
DNA is

• DNA replication

• Genetic engineering

• Denaturation

• Renaturation

A polygenic inheritance in human beings is

• Skin colour

• Sickle cell anaemia

• Colour blindness

• Phenylketonuria

Nucleic acid segment tagged with a radiactive molecule is called

• Clone

• Probe

• Plasmid

• Vector

The Okazaki fragments in DNA chain growth

• Results in transcription

• Polymerise in the 3' to 5' direction and forms replication fork

• Prove semi-conservative nature of DNA replication

• Polymerise in the 5' to 3' direction and explain 3' to 5 DNA replication

One gene-one enzyme relationship was established for the first time in

• Neurospora crassa

• Salmonella typhimurium

• Escherichia coli

• Diplococcus pneumoniae