Polytene chromosomes were first observed by___________________?

Related Mcqs:

1. If the haploid number of chromosomes in a plant is 12, then the number of chromosomes in monosmic is_________________?

   A. 12
   B. 24
   C. 22
   D. 23

2. When a cell with 40 chromosomes undergoes meiosis each of the four resulting cells has_____________________?

   A. 10 chromosomes
   B. 20 chromosomes
   C. 40 chromosomes

3. If diploid chromo me number in flowering plant is 8 then 4 chromosomes will be present in_________________?

   A. Endosperm cell
   B. Leaf cells
   C. Cotyledonary cell
   D. Synergids

4. Duplication of chromosomes occurs during_________________?

   A. Mitosis only
   B. Meiosis
   C. Mitosis and meiosis
   D. None of the above

5. If the leaf cells have eight chromosomes it is mostly likely that__________________?

   A. Gametes will have 8 chromosomes
   B. Gametes will have 4 chromosomes
   C. Zygote will have 4 chromosomes
   D. Zygote will have 16 chromosomes

6. In meiosis homologous chromosomes separate from each other in ______________________?

   A. metaphase I
   B. Auaphase I
   C. Metaphase II
   D. Anaphase II

7. Diagrammatic representation of the chromosomes of an organism arranged according to their size is called_____________________?

   A. Ideogram
   B. Gene map
   C. Karyotype
   D. Phenotype

8. A normal plant suddenly started reproducing parthengentically. the number of chromosomes of the second generation compared to the parent plant will be____________________?

   A. Double
   B. One half
   C. One fourth
   D. Same

9. A rearrangement of a group of genes in a chromosome in such a way that their order in the chromosomes is reversed is known as _____________________?

   A. Inversion
   B. Conversion
   C. Recessive gene
   D. Realignment

10. The giant chromosomes of Drosophila are found in_____________________?

    A. Testes
    B. Salivary glands
    C. Ovaries
    D. Muscles