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  • Question
  • If two genes show 50% recombination


  • Options
  • A. they are on different chromosomes
  • B. they are on same chromosome but far apart
  • C. both (a) and (b)
  • D. they are closely located on the same chromosome

  • Correct Answer
  • both (a) and (b) 


  • Animal Biotechnology Chromosomes problems


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    • 1. Which of the following denotes a pair of contrasting characters?

    • Options
    • A. Alleles
    • B. Phenotype
    • C. Homozygous
    • D. Genotype
    • Discuss
    • 2. How many chromosomes are there in Caernorhabditis elegans?

    • Options
    • A. 3
    • B. 6
    • C. 9
    • D. 12
    • Discuss
    • 3. An odd number of cross overs in inverted region will result into formation of a dicentric chromatid and acentric chromatid at anaphase I incase of

    • Options
    • A. pericentric inversion
    • B. paracentric inversion
    • C. double inversion
    • D. none of these
    • Discuss
    • 4. The percentage of individual with a given genotype, which exhibits the associated phenotype, is defined as

    • Options
    • A. penetrance
    • B. expressivity
    • C. inheritance percent
    • D. environmental influence
    • Discuss
    • 5. Diethyl stilbestrol (DES), a synthetic estrogen causes

    • Options
    • A. chromosome lagging
    • B. disruption of mitotic spindle
    • C. centriole elongation
    • D. all of the above
    • Discuss
    • 6. Incase of inversion when the inverted segment of chromosome includes centromere, it is known as

    • Options
    • A. paracentric inversion
    • B. double inversion
    • C. inverted inversion
    • D. pericentric inversion
    • Discuss
    • 7. Bar eye character of Drosophila is due to

    • Options
    • A. duplication in region of 16A of X chromosome
    • B. deletion in region of 16A of X chromosome
    • C. due to presence of additional X-chromosome
    • D. due to a point mutation in eye-locus
    • Discuss
    • 8. Which of the following begins when pairs of sister chromatids align in the center of the cell?

    • Options
    • A. Anaphase
    • B. Interphase
    • C. Metaphase
    • D. Prophase
    • Discuss
    • 9. Which of the following is not a part of a human chromosome in any phase?

    • Options
    • A. Centriole
    • B. Histone
    • C. Nucleosome
    • D. Centromere
    • Discuss
    • 10. Sequences that correctly describes the cell cycle is

    • Options
    • A. -> G1-> G2 -> S -> mitosis -> cytokinesis ->
    • B. -> S -> G2 -> mitosis -> cytokinesis -> G1 ->
    • C. -> G1 ->S -> G2 -> cytokinesis -> mitosis ->
    • D. ->cytokinesis-> mitosis -> G1 -> S -> G2 ->
    • Discuss


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