1. The least level of chromosome organization is
(a) 30nm fibre
(b) solenoid
(c) nucleosome
(d) none of the above
Answer: :: (c)
2. This has the largest number of chromosomes
(a) Pisum sativum
(b) Giant redwood tree
(c) Haplopappus gracilis
(d) Ophioglossum reticulatum
Answer: :: (d)
3. A chromosome with a very short arm and a very long arm is referred to as
(a) Metacentric
(b) telocentric
(c) Acrocentric
(d) Sub-metacentric
Answer: :: (c)
4. A chromosome is the thickest during
(a) anaphase
(b) prophase
(c) interphase
(d) metaphase
Answer: :: (d)
5. The diagrammatic representation of karyotype (morphological representation of chromosomes) of a species is known as
(a) Cladogram
(b) Ecogram
(c) Chromogram
(d) Idiogram
Answer: :: (d)
6. If Bb is a gene pair of an individual then the alleles for this gene pair are
(a) A and B
(b) a and A
(c) a and b
(d) b and B
Answer: :: (d)
7. Euchromatin
(a) stains lightly
(b) is partially condensed
(c) genetically active chromatin with genes
(d) all of the above
Answer: :: (d)
8. The point at which polytene chromosomes appear to be attached together is known as
(a) centriole
(b) centromere
(c) chromomere
(d) chromocenter
Answer: :: (d)
9. In which typical stage are Lampbrush chromosomes observed?
(a) meiotic prophase
(b) mitotic metaphase
(c) mitotic prophase
(d) mitotic anaphase
Answer: :: (a)
10. Each of the chromosome at the anaphase stage of a bone marrow cell in our body has
(a) one chromatid
(b) two chromatids
(c) several chromatids
(d) no chromatids
Answer: :: (a)
