Solapur University
B.Sc. – II (Semester – III) (Biotechnology) Examination, 2015
GENETICS (New)
Inheritance Biology – I
Day and Date : Thursday, 30-4-2015 Max. Marks : 50
Time : 3.00 p.m. to 5.00 p.m.
N. B. : 1) All the questions are compulsory.
2) Figures to the right indicate full marks.
3) Draw diagrams wherever necessary.
1. Rewrite the sentences by choosing correct alternatives : 10
1) Mendel’s law of segregation is also called as ______________
a) Law of purity of gametes b) Law of independent assortment
c) Law of dominance d) Law of recessive
2) During ______________ , a dominant allele does not mask completely the
phenotypic expression of the recessive allele in a heterozygous condition.
a) co-dominance b) incomplete dominance
c) mutation d) supplementary gene interaction
3) In monohybrid cross, ______________ is the phenotypic ratio.
a) 3 : 1 b) 1 : 2 : 1 c) 1 : 2 : 2 : 1 d) 2 : 2
4) A human, having ‘B’ blood group, possesses _________ antibodies in plasma.
a) Anti – B b) Anti – A, Anti – B
c) Anti – A d) None
5) The genes which occur in homologous sections of ‘X’ and ‘Y’ chromosomes
are called ______________ genes.
a) XY-linked b) X-linked c) Y-linked d) Sex
6) The map showing relative distance of linked genes on a chromosome during
transference of characters is called ______________
a) Chromosomal map b) Histogram
c) Allelogram d) Linkage map
7) Male sterility in plants is associated with ______________
a) Stem failure b) Pollen failure
c) Leaf failure d) Root failure
8) ______________ discovered bacterial transformation.
a) Leeuwenhock b) Griffith c) Soljhenistin d) H. Khorana
P.T.O.
SLR-M – 35
9) A gene or locus which suppresses or masks the action of a gene at another
locus is termed as ______________
a) epistatic gene b) hypostatic gene
c) hyperstatic gene d) mutant gene
10) Eye colour in Drosophila is an example of inheritance of _________ genes.
a) Y-linked b) XY-linked c) X-linked d) Autosomal
2. Answer the following (any 5) : 10
1) What are the characters of multiple alleles ?
2) What is plasmid ?
3) What are the uses of genetic maps ?
4) Define the terms gene and allele.
5) What is dihybrid cross ?
6) What are sex chromosomes ?
3. A) Answer the following (any 2) : 6
1) Define crossing over. Describe factors affecting crossing over.
2) Explain the term pseudoalleles.
3) Describe the process of conjugation in bacteria.
B) Describe the mechanism of sex-determination of Drosophila. 4
4. Answer the following (any 2) : 10
1) Explain the term co-dominance with an example.
2) Define multiple alleles. Explain it with the help of four colour in rabbit.
3) What is linkage ? Explain complete and incomplete linkage.
5. Answer the following (any 2) : 10
1) Describe the three-point test cross with an example.
2) What is gene interaction ? Describe complementary gene interaction.
3) Describe cytoplasmic inheritance with an example.
B.Sc. – II (Semester – III) (Biotechnology) Examination, 2015
GENETICS (New)
Inheritance Biology – I
Day and Date : Thursday, 30-4-2015 Max. Marks : 50
Time : 3.00 p.m. to 5.00 p.m.
N. B. : 1) All the questions are compulsory.
2) Figures to the right indicate full marks.
3) Draw diagrams wherever necessary.
1. Rewrite the sentences by choosing correct alternatives : 10
1) Mendel’s law of segregation is also called as ______________
a) Law of purity of gametes b) Law of independent assortment
c) Law of dominance d) Law of recessive
2) During ______________ , a dominant allele does not mask completely the
phenotypic expression of the recessive allele in a heterozygous condition.
a) co-dominance b) incomplete dominance
c) mutation d) supplementary gene interaction
3) In monohybrid cross, ______________ is the phenotypic ratio.
a) 3 : 1 b) 1 : 2 : 1 c) 1 : 2 : 2 : 1 d) 2 : 2
4) A human, having ‘B’ blood group, possesses _________ antibodies in plasma.
a) Anti – B b) Anti – A, Anti – B
c) Anti – A d) None
5) The genes which occur in homologous sections of ‘X’ and ‘Y’ chromosomes
are called ______________ genes.
a) XY-linked b) X-linked c) Y-linked d) Sex
6) The map showing relative distance of linked genes on a chromosome during
transference of characters is called ______________
a) Chromosomal map b) Histogram
c) Allelogram d) Linkage map
7) Male sterility in plants is associated with ______________
a) Stem failure b) Pollen failure
c) Leaf failure d) Root failure
8) ______________ discovered bacterial transformation.
a) Leeuwenhock b) Griffith c) Soljhenistin d) H. Khorana
P.T.O.
SLR-M – 35
9) A gene or locus which suppresses or masks the action of a gene at another
locus is termed as ______________
a) epistatic gene b) hypostatic gene
c) hyperstatic gene d) mutant gene
10) Eye colour in Drosophila is an example of inheritance of _________ genes.
a) Y-linked b) XY-linked c) X-linked d) Autosomal
2. Answer the following (any 5) : 10
1) What are the characters of multiple alleles ?
2) What is plasmid ?
3) What are the uses of genetic maps ?
4) Define the terms gene and allele.
5) What is dihybrid cross ?
6) What are sex chromosomes ?
3. A) Answer the following (any 2) : 6
1) Define crossing over. Describe factors affecting crossing over.
2) Explain the term pseudoalleles.
3) Describe the process of conjugation in bacteria.
B) Describe the mechanism of sex-determination of Drosophila. 4
4. Answer the following (any 2) : 10
1) Explain the term co-dominance with an example.
2) Define multiple alleles. Explain it with the help of four colour in rabbit.
3) What is linkage ? Explain complete and incomplete linkage.
5. Answer the following (any 2) : 10
1) Describe the three-point test cross with an example.
2) What is gene interaction ? Describe complementary gene interaction.
3) Describe cytoplasmic inheritance with an example.
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