NET, IAS, State-SET (KSET, WBSET, MPSET, etc.), GATE, CUET, Olympiads etc.: Zoology MCQs (Practice_Test 74 of 112)
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- In ciliate protozoans like Paramecium, two types of nuclei occur, the larger macronucleus and the smaller micronucleus. Which one the following statement is NOT true about them?
- The macronucleus contains genes only for vegetative phase of life.
- The micronucleus contains genes only for completion of sexual reproduction.
- The micronucleus contains the full genetic endowment of organism for both vegetative and sexual phases of life.
- The macronucleus is a collection of multiple polyploidy copes of only those segments of chromosomes that contains genes associated with the somatic life of the organism
- In the statement ‘cell biologists can successfully fuse a human fibroblast with a mouse tumour cell to form a cell with two nuclei (see given figure) known as X which eventually proceeds to mitosis and produce Y having all the chromosomes inside a single large nucleus’ X and Y stand respectively for
- Nuclear hetrogenate and hetrerocayon
- Heterocaryon and hybrid cell
- Hybrid cell and nuclear heterogenate
- Hybrid cell and heterocaryon
- Match List I (Function of proteins of cyoskeleton) with List II (Proteins involved in the given functions) and select the correct answer using the codes given below the lists:
Table Supporting: NET, IAS, State-SET (KSET, WBSET, MPSET, Etc.) , GATE, CUET, Olympiads Etc. : Zoology MCQs (Practice_Test 74 of 112) List-I List-II - Contraction of micmfaments
- Inhibition of polymerization of microtubules
- Depolymerization of microfilaments
- Movement of cilia and flagella
- Cytochalasin B
- Actin
- Dynein
- Calinodulin
- A
- B
- C
- D
- 2
- 4
- 1
- 3
- 2
- 4
- 3
- 1
- 4
- 2
- 1
- 3
- 4
- 2
- 3
- 1
- Consider the following components:
- Transitional elements of ER
- RER
- Golgi complex
- Zymogen granules
- Lumen of the pancreas
- The direction of flow in the secretary pathway of secreting protein in the opaucreatic cell is
- 1, 2,3, 4,5
- 2, 1,3, 4,5
- 2, 1,4, 3,5
- 1, 2,4, 3,5
- Short DNA fragments referred to as Okazaki pieces are synthesized during DNA replication. The template strand for their synthesis is
- Each of the strands of DNA duplex
- Leading strand of DNA
- Lagging strand of DNA
- Single-strand DNA of virus like f X − 174
- In Drosophila, black body (b) is recessive to grey body (B) ; vestigial (V) wings is recessive to long (V) wing. The two loci are 19 map units apart on an auto some. A cross is made as indicated below:
- B V b v == == == == x == == == == b V b v
- Grey-bodied Black-bodied
- Long-winged vestigial-winged
- Male Female
- What will be the frequency of phenotypes in the next generation?
- Greybodied longwinged
- Greybodied vestigialwinged
- Block bodied longwinged
- Blackbodied vestigial winged
- Which is correct?
- 50%-50%
- -50% 50%-
- 41% 9% 9% 41%
- 9% 41% 41% 9%
- Early investigators studied various aspects (List I) of chromosomes by employing diverse techniques (List II) , Match List I with List II and select the correct answer using the codes given below the lists
Table Supporting: NET, IAS, State-SET (KSET, WBSET, MPSET, Etc.) , GATE, CUET, Olympiads Etc. : Zoology MCQs (Practice_Test 74 of 112) List-I List-II - The most important component of Eukaryote chromosome
- Denaturation and renaturation kinetics
- Late replication of X chromosome in mammalian females
- Semi conservative replication of a prokaryote genome
- Ultraviolet absorption
- Density gradient equilibrium ultracentrifugation
- Fulegen reaction
- Autoradiography
- A
- B
- C
- D
- 3
- 1
- 4
- 2
- 3
- 1
- 2
- 4
- 1
- 3
- 2
- 4
- 1
- 3
- 4
- 2
- Persons carrying the dominant gene (s) can taste a particular chemical and are called tasters. The others are non-tasters (11) , a large random-mating human population at the Hardy-Weinberg equilibrium, there are 36% tasters and 64% non-tasters. The frequency of heterozygote in the population is
- 6%
- 8%
- 32%
- 48%
- It in a DNA template, the sequence of bases is AGGATAACC, which one of the following would be the correct sequence of base of a messenger RNA transcribed from it?
- TCCUAGOT
- UCCUAUUGG
- TCCUUGGTT
- AGGAUAACC
- A replicating fork along with the direction (shown by arrow) of migration of DNA polymerase on the leading strand is shown in the given figure. The ends A, B, C and D are respectively.
- 5 ‘5’ 5 ‘and 3’
- 3 ‘5’ 3 ‘and 5’
- 5 ‘3’ 5 ‘and 3’
- 3 ‘3’ 3 ‘and 5’
- A cross was made between a male and a female Drosophila. The progeny consisted of made and female in the ratio of 1: 2. Which one of the following accounts for tile variation in the sex ratio
- The presence of a sex-linked lethal recessive gene in the parental female fruit fly.
- Non-disjunction during oogenesis in the female fruit fly.
- Appearance of a sudden mutation in the Y chromosome of the parental male fruit fly.
- Non-disjunction during spermatogenesis in the male fruit fly.
- A colour-blind female who is carrier for hemophilia marries a normal male. The frequency of incidence of each character amount the male and female children will be such that Male Female
- 50% colour-blind, 50% colour blind 50% hemophilic 50% normal
- 50% normal; 100% normal 50% colour-blind and hemophilic
- 100% colour-blind; 50% normal 50% colour-blind
- 50% colour-blind, 100% normal 50% colour-blind and hemophilic
- Consider the following diseases⟋syndromes:
- Huntington՚s chorea
- Galactosemia
- Duchenne muscular dystrophy
- Phenyliketonuria
- Those attributed to recessive mutations in human beings include
- l, 2 and 3
- 2,3 and 4
- 2 and 4
- 1 and 3
- The given is a pedigree chart of human genetic disease. The situation responsible for the sudden reappearance of the genetic disease in generation IV is
- Congruency
- Consanguinity
- Environmental effect
- Reverse mutation
- A eukaryotic mRNA and the protein it synthesized are shown in the given figure. The ends A and D and a the segments B and C are A B C D
- 3 ‘cap poly A 5’
- 3 ‘poly A cap 5’
- 5 ‘Poly A cap 3’
- 5 ‘cap poly A 3’