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Gene and Chromosome - Basic



Dear Readers,

Compared to other sections, Botany is considered to be the most scoring section. If prepared thoroughly, Botany can help students to secure a meritorious position in the exam. These questions are very important in achieving your success in Exams after 12th.

Q1. Gene controls

  •  Heredity but not protein synthesis
  •  Protein synthesis but not heredity
  •  Both heredity and protein synthesis
  •  Biochemical action of some enzymes

Both heredity and protein synthesis

Q2. Mc Clintock discovered

  •  Transposons/Jumping gene
  •  Retroposons
  •  Plasmids
  •  None of these

Transposons/Jumping gene

Q3. When a cell with 40 chromosomes undergoes meiosis, each of the four resulting cells has

  •  20 chromosomes
  •  40 chromosomes
  •  80 chromosomes
  •  10 chromosomes

20 chromosomes

Q4. The functional unit of DNA i.e. gene is called

  •  Cistron
  •  Muton
  •  Genome
  •  Recon

Cistron

Q5. Different types of chromosomes can be recognised by the position of the following separation the two arms

  •  Centromere
  •  Genes
  •  Spindle
  •  Nucleus

Centromere

Q6. Nucleosomes are bounded by

  •  RNA
  •  Histone H4
  •  Histone H3
  •  DNA

DNA

Q7. An inherited factor that determines a biological characteristic of an organism is called

  •  Gene
  •  Chromosome
  •  Allele
  •  Chromatid

Gene

Q8. Who postulated the "Chromosomes Theory of Inheritance"

  •  De Vries
  •  Mendel
  •  Sutton and Boveri
  •  Morgan

Sutton and Boveri

Q9. A gene is made up of

  •  DNA
  •  RNA
  •  Either DNA or RNA
  •  Amino acids

Either DNA or RNA

Q10. One gene one enzyme concept means

  •  One gene controls one enzyme
  •  All the enzymes are controlled by genes
  •  All the genes are controlled by enzymes
  •  None of these of the above

One gene controls one enzyme



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