Biotechnology

ANIMAL BIOTECHNOLOGY CHROMOSOMES MCQs

Total Questions : 21

Page 1 of 3 pages
Question 1. Transmission of a gene from male parent to female child to male grand child is known as
  1.    criss-cross inheritance
  2.    quantitative inheritance
  3.    holandric inheritance
  4.    maternal inheritance
 Discuss Question
Answer is Option A. -> criss-cross inheritance
Question 2. 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
  1.    paracentric inversion
  2.    none of these
  3.    double inversion
  4.    pericentric inversion
 Discuss Question
Answer is Option A. -> paracentric inversion
Question 3. The percentage of individual with a given genotype, which exhibits the associated phenotype, is defined as
  1.    environmental influence
  2.    penetrance
  3.    inheritance percent
  4.    expressivity
 Discuss Question
Answer is Option B. -> penetrance
Question 4. Bar eye character of Drosophila is due to
  1.    due to presence of additional X-chromosome
  2.    due to a point mutation in eye-locus
  3.    deletion in region of 16A of X chromosome
  4.    duplication in region of 16A of X chromosome
 Discuss Question
Answer is Option D. -> duplication in region of 16A of X chromosome
Question 5. Diethyl stilbestrol (DES), a synthetic estrogen causes
  1.    disruption of mitotic spindle
  2.    chromosome lagging
  3.    All of these
  4.    centriole elongation
 Discuss Question
Answer is Option C. -> All of these
Question 6. The degree or extent to which a given genotype is expressed phenotypically in a particular individual is defined as
  1.    expressivity
  2.    inheritance strength
  3.    environmental influence
  4.    penetrance
 Discuss Question
Answer is Option A. -> expressivity
Question 7. Which of the following denotes a pair of contrasting characters?
  1.    Phenotype
  2.    Genotype
  3.    Homozygous
  4.    Alleles
 Discuss Question
Answer is Option D. -> Alleles
Question 8. If two genes show 50% recombination
  1.    both (a) and (b)
  2.    they are on different chromosomes
  3.    they are closely located on the same chromosome
  4.    they are on same chromosome but far apart
 Discuss Question
Answer is Option A. -> both (a) and (b)
Question 9. How many chromosomes are there in Caernorhabditis elegans?
  1.    12
  2.    6
  3.    3
  4.    9
 Discuss Question
Answer is Option B. -> 6
Question 10. A map of chromosomes that utilizes cloned and sequenced DNA fragments rather than genetic markers is known as
  1.    a cloning map
  2.    a genetic map
  3.    none of these
  4.    a physical map
 Discuss Question
Answer is Option D. -> a physical map