The protein products of tumour suppressor gene may
Be present in non-cancerous cells
Cause signal cell death
Regulate the cell cycle
All of the above
A.
Be present in non-cancerous cells
A tumour suppressor gene or anti-oncogene, is a gene that protects a cell from one step on the path to cancer. It regulates the cell cycle, causes signal cell death and present is a non-cancerous cell.
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
In peal plants, yellow seeds are dominant to green. If a heterozygous yellow seeded plant is crossed with a green seeded plant, what ratio of yellow and green seeded plants could you expect in F1-generation
9 : 1
1 : 3
3 : 1
50 : 50
The one advantage of cleistogamy is
It leads to greater genetic diversity
Seed dispersal is more efficient and wide spread
seed set is not dependent on pollinators
Each visit of pollinator results in the transfer of hundreds of pollen grains
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
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
Match the following Column I with Column II.
| Column I | Column II |
| A. Complementrary Ratio | 1. 9:7 |
| B. Supplementary Ratio | 2. 9:3:4 |
| C. Epistatic Ratio | 3. 12:3:1 |
| D. Inhibitory Ratio | 4. 13:3 |
A-4, B-1, C-3, D-2
A-1, B-2, C-3, D-4
A-4, B-1, C-2, D-3
A-1, B-3, C-2, D-4
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
In a mutational event, when adenine is replaced by guanine, it is a case of
Frameshift mutation
Transcription
Transition
Transversion
Which of the following statements is false regarding SDS-polyacrylamide gel electrophoresis?
Proteins are separated by molecular weight
SDS is a detergent which gives charge to protein
Large protein move more slowly through gel
SDS is used to maintain the 3-dimensional structure of protein
