Biology

1. Given below is a pedigree chart of a family with five children. It shows the inheritance of attached earlobes as opposed to the free ones. The squares represent the male individuals and circles the female individuals. Which one of the following conclusions drawn is correct?

The parents are homozygous dominant

The trait is Y-linked

The parents are homozygous recessive

The parents are heterozygous

Question 1 of 15

2. Frame shift mutation occurs when

Base is added or deleted

Base is deleted

None of the above

Base is added

Question 2 of 15

3. Okazaki fragments form

Leading strand

Senseful strand

Non-sense strand

Lagging strand

Question 3 of 15

4. Restriction endonucleases are used as

Molecular cement to combine DNA sites

Molecular degradation to DNA breakup

Molecular knives for cutting DNA at specific sites

Molecular build up at nucleotides

Question 4 of 15

5. Primary source of allelic variation is

Mutation

Polyploidy

Recombination

Independent assortment

Question 5 of 15

6. Pure line breed refers to

Both b & c

Linkage

Homozygosity

Heterozygosity

Question 6 of 15

7. The Structure of DNA is

Triple helix

Double helix

Single helix

Linear

Question 7 of 15

8. Which RNAs pick up specific amino acid from amino acid pool in the cytoplasm to ribosome during protein synthesis?

mRNA

hnRNA

rRNA

tRNA

Question 8 of 15

9. Root cell of wheat has 42 chromosomes. What would be the number of chromosomes in the synergid cell?

Question 9 of 15

10. Colchicine prevents the mitosis of cells at which of the following stage?

Prophase

Interphase

Anaphase

Metaphase

Question 10 of 15

11. What is true about t-RNA?

It looks like clover leaf in the three dimensional structure

It binds with an amino acid at it 3’ end.

It has five double stranded regions.

It has a codon at one end which recognizes the anticodon on messenger RNA.

Question 11 of 15

12. Genes of which one of the following is present exclusively on the X-chromosome in humans?

Facial hair/moustaches in males

Red-green colour blindness

Baldness

Night blindness

Question 12 of 15

13. XO chromosomal abnormality in humans causes

Patau’s syndrome

Down’s syndrome

Klinefelter’s syndrome

Turner’s syndrome

Question 13 of 15

14. Which one of the following pairs of terms/names mean one and the same thing?

Cistron-triplet

DNA fingerprinting –DNA profiling

Codon-gene

Gene pool-genome

Question 14 of 15

15. In genetic engineering, which of the following is used?

E.R.

Mitochondria

Plastid

Plasmid

Question 15 of 15

Test Name	Biology Genetics Test Online MCQs
Subject	Biology
Test Type	MCQs
Total Question	15
Total Marks	30
Total Time	15 Mints
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Test By Subject	Biology
Test By Topics	Biology Subject

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Biology Genetics Test Online MCQs

Biology Genetics Test Online MCQs

Biology

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