Genetics 7 Online Test

Bacterial genomes consist of
circular, ssRNA
circular, dsDNA
linear, triple stranded DNA
zig-zag DNA.
What would be a complimentary sequence GATTACA?
GCGUUAG
CTAATGT
CGCAAUT
GCGTTUC.
Identify the pair of nucleotides which are joined by 3 hydrogen bonds in double stranded DNA
AG
AT
TG
CG
Haploids are more suitable for mutation studies than the diploids. This is because
haploids are reproductively more stable than diploids
mutagens penetrate in haploids more effectively than is diploids
haploids are more abundant in nature than diploids
all mutations, whether dominant or recessive are expressed in haploids
Which one of the following conditions in humans is correctly matched with its chromosomal abnormality/linkage?
Klinefelter's syndrome —44 autosomes +XXY
Colour blindness - Y-linked
Erythroblastosis foetalis-X-linked
Down syndrome - 44 autosomes + XO
One of these is not associated with termination of protein synthesis
UAA
UAG
UGA
UUU
The experiments which proved that DNA is genetic material were performed on
Bacteria
Neurospora
Mice
Drosophila
/
A. B. C. D. 2 3 4 1
1 2 3 4
4 3 2 1
3 2 1 4
Correct statement with reference to Watson Crick Model of DNA is
2 hydrogen bonds between cytosine and guanine 3 hydrogen bonds between adenine and thymidine
1 hydrogen bond between cytosine and guanine 3 hydrogen bonds between adenine and thymidine
1 hydrogen bond between adenine and thymidine 3 hydrogen bonds between cytosine and guanine
3 hydrogen bonds between cytosine and guanine 2 hydrogen bonds between adenine and thymidine
In the DNA molecule_________
the total amount of purine nucleotides and pyrimidine nucleotides is not always equal
there are two strands which run parallel in the 5' —>3' direction
the proportion of Adenine in relation to thymine varies with the organism
there are two strands which run antiparallel-one in 5'—>3' direction and other in 3 '—>5’
Genetic traits are often carried on separate chromosomes. Which of the following genotype represents a dihybrid organism?
TTRR
TtRr
ttrr
ttRr.
Genetic code is
Degenerate and overlapping
Degenerate and non-overlapping and non- ambiguous
Universal, overlapping and ambiguous
Degenerate and overlapping and ambiguous
The experiments which proved that DNA is genetic material were performed on
bacteria
Neurospora
Mice
Drosophila
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Description:

Genetics is a field of biology that deals in heredity and variation in living things. All living things inherit different traits from their parents . The idea is being used since prehistoric times to improve crops and animals through selective breeding. Modern genetics was set into action with the work of Gregor Mendel from the mid-nineteenth century. The physical basis for heredity as we know now are the units of inheritance called genes.

Discussion

Annadas

In que 7 the answer is bacteria - as Griffith used E.coli (a bacteria )

3906 days 9 hours 30 minutes ago

Dr. SUBROTO BISWAS
Professor/SME/Instructor in Biology (NEET/AIIMS)
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