1. First eukaryotic genome sequenced was that of
A) Haemophilus influenzae
B) Caenorhabditis elegans
B) G 20% C 20% T 24% A 24%
C) G 26% C 26% T 24% A 24%
5. A homozyogous plant having red flowers is crossed with a homozygous plant
bearing white flowers, the offspring are:
A) All with red flowers B) all with white flowers
c) Half with white flowers d) Half with red flowers
6. Mutation theory of evolution was proposed by
A) De Vries B) Darwin C) Weismann D) Lamarck
7. Genes that occur only in Y chromosome are
called
A) Lethal genes B) plasma genes C) Holandric genes D) Duplicate genes
8. Eukaryotic and Prokaryotic genome differs by having:
A) DNA is circular and single stranded in prokaryotes
B) DNA is complexed with histone in prokaryotes
C) Repetitive sequences are present in
eukaryotes
D) Genes in the former case are organized into
operons
9. When a gene exists in more than two alleic forms, the phenomenon is
called
A) polygenes B) Multiple allelism C) Pleiotropism D) Multiple genes
10. A short length of DNA molecule contains 120 adenine and 120 Cytosine bases. The total number of nucleotide in this DNA segment is:
A) 480 B) 240 C) 120 D) 60
11. Which of the following changes is a transition base substitution?
A) Adenine replaced by thymine
B) Cytosine replaced by adenine
C) Guanine replaced by adenine
D) Three nucleotide pairs are inserted into DNA
1. D)Saccharomyces cerevisiae
2. C) Sugar and pyrimidines
3. C) G 26% C 26% T 24% A 24%
4. D) Autopolyploid
5. A) All with red flowers
6. A) De Vries
7. C) Holandric genes
8. C) Repetitive sequences are present in eukaryotes
9. B) Multiple allelism
10. A) 480
11. C) Guanine replaced by adenine
