(A) Prophase
(B) G1 Phase
(C) S-Phase
(D) Metaphase
Tag: Zoology mcqs
When DNA is extracted from cells of E.coli and analysed for base composition, it is found that 38% of the bases are cytosine. What percentage of the bases are adenine?
(A) 12%
(B) 24%
(C) 38%
(D) 76%
The complementary RNA sequence for GATGTT is:
(A) CTACAA
(B) CUACAA
(C) AGCTGG
(D) AGCUGG
In animals the enzyme unique to gluconeogenesis is:
(A) Fructose-1,6-bisphosphatase
(B) Enolase
(C) Aldolase
(D) None of the above
The RNA molecules that exhibit catalytic activity are called?
(A) mRNA
(B) Ribonulcease
(C) Ribosomes
(D) Ribozymes
All of the following change the gene frequency except:
(A) Migration
(B) Mutation
(C) Inbreeding
(D) Selection
In which of the following stages crossing over occurs?
(A) Pachytene
(B) Leptotene
(C) Zygotene
(D) Diplotene
Meiosis II is similar to mitosis in that:
(A) Homologous chromosomes synapse
(B) The daughters cells are diploid
(C) Sister chromatids separate during anaphase
(D) Chromosome number is reduced