UPSC  Biology

1. Inflammation of joints due to accumulation of uric acid crystals is called as

Gout Myasthenia gravis Osteoporosis Osteomalacia

2. chromosomes are visible with chromatids at this phase of mitosis

Interphase Prophase Metaphase Anaphase

3. Inheritance of ABO blood grouping is an example of

Dominance Codominance Incomplete dominance All of these

4. In a dihybrid cross between RRYY and rryy parents, the number of RrYy genotypes in F2 generation will be

4 3 2 1

5. Identify a 47, + 21 disorder from the following

Downs syndrome Turners syndrome Phenylketonuria Klinefelter's syndrome

6. Uracil is present in RNA at the place of

Adenine Guanine Cytosine Thymine

7. Copying genetic information from one strand of DNA into RNA is

Translation Transcription Transformation Transduction

8. Millers closed flask contained

CH4 H2 NH3 and Water vapour All of these

9. Change of frequency of alleles in a population results in evolution is proposed in

Darwins theory Lamarcks theory Hardy-Weinberg principle De Vries theory

10. One of the following is the vestigial organ in human beings

Nictitating membrane Spleen Femur Tibia


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