Topic: Chapter 18: Heredity (Test 1)



Topic: Chapter 18: Heredity
Q.1
According to Mendel alleles have the following character
A. Pair of genes
B. Responsible for character
C. Production of gametes
D. Recessive factors
Answer : Option B
Explaination / Solution:
No Explaination.


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Q.2
9 : 3 : 3 : 1 ratio is due to
A. Segregation
B. Crossing over
C. Independent assortment
D. Recessiveness
Answer : Option C
Explaination / Solution:
No Explaination.


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Q.3
The region of the chromosome where the spindle fibres get attached during cell division
A. Chromomere
B. Centrosome
C. Centromere
D. Chromonema
Answer : Option C
Explaination / Solution:
No Explaination.


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Q.4
The centromere is found at the centre of the ________________ chromosome.
A. Telocentric
B. Metacentric
C. Sub-metacentric
D. Acrocentric
Answer : Option B
Explaination / Solution:
No Explaination.


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Q.5
The _____________ units form the backbone of the DNA.
A. 5 carbon sugar
B. Phosphate
C. Nitrogenous bases
D. Sugar phosphate
Answer : Option D
Explaination / Solution:
No Explaination.


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Q.6
Okasaki fragments are joined together by ___________________.
A. Helicase
B. DNA polymerase
C. RNA primer
D. DNA ligase
Answer : Option D
Explaination / Solution:
No Explaination.


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Q.7
The number of chromosomes found in human beings are __________________.
A. 22 pairs of autosomes and 1 pair of allosomes.
B. 22 autosomes and 1 allosome
C. 46 autosomes
D. 46 pairs autosomes and 1 pair of allosomes.
Answer : Option A
Explaination / Solution:
No Explaination.


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Q.8
The loss of one or more chromosome in a ploidy is called ___________.
A. Tetraploidy
B. Aneuploidy
C. Euploidy
D. polyploidy
Answer : Option B
Explaination / Solution:
No Explaination.


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