Biology Entry Test MDCAT Test No.1
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1. Mitosis takes place in(a) Haploid cells of all body cells
(c) Haploid & diploid cells of all body cells
(b) Diploid cells of all body cells
(d) Haploid germ cells
2. At the beginning of Karyokinesis, partition takes place in the
(a) Nucleus (c) Cell
(b) Chromosome (d) Centriole
3. Spindle is composed of _________ sets of microtubules
(a) one (c) three
(b) Two (d) four
4. During cytokinesis of animal cells, contractile rings are formed of
(a) Actin & myosin
(c) Tubulin & traces of RNA
(b) Tubulin & traces of DNA
(d) Cellulose & pectin
5. Prophase, metaphase, Anaphase and telophase are the stages of
(a) Karyokinesis (c) mitosis only
(b) cytokinesis (d) mitosis & meiosis
6. During cytokinasis, phragmoplast is formed from vesicle which originate from
(a) lysosome (c) endoplasmic reticulum
(b) Golgi complex (d) Dictyosome
7. Organisms undergo asexual reprocduction by mitosis
(a) viruses & bacteria (c) animals only
(b) plants only (d) plants and animals
8. Sister chromatids are seperated from centromere during
(a) metaphase of mitosis
(c) anaphase of mitosis
(b) metaphase I of meiosis
(d) Anaphase I of meiosis
9. A duplicated structure which consists of two sister chromatids attached at centromere
(a) metaphase chromosome
(c) telphase chromosome
(b) prophase chromosome
(d) anaphase chromosome
10. Meiosis is the special type of cell division in which the number of chromosomes is reduced to half in
(a) Daughter cells (c) Daughters
(b) parent cells (d) new individual
11. In plants, Meiosis takes place in
(a) spermatocyte (c) spores
(b) oocyte (d) spore mother cells
12. The reduction division is
(a) mitosis (c) Meiosis II
(b) Meiosis I (d) Meiosis I & II
13.Each chromosome has two chromatids because chromosome have been replicated during
(a) Cytokinesis (c) Metaphase I
(b) Interphase (d) Metaphase II
14. Synapsis starts during
(a) Zygotene (c) Diplotene
(b) Leptotene (d) Diakinesis
15. Non-sister chromatids of homologous chromosomes exchange their segments due to
(a) Synapsis (c) Chiasmata formation
(b) Crossing over (d) Recombination
16. Actual reduction phase of meiosis is
(a) Metaphase I (c) Anaphase I
(b) Metaphase II (d) Anaphase II
17. Two significant happenings of Meiosis
(a) synapsis & crossing over
(c) synapsis & random assortment
(b) chiasmata formation & Crossing over
(d) crossing over & random assortment
18. In Down’s syndrome, non-disjunction appears to occur in the
(a) Autosomes of ova
(c) autosomes of somatic cells
(b) sex chromosomes of ova
(d) sex chromoses of somatic cells
19. Turner’s syndrome is represented by
(a) 44 autosomes + x (c) 44 autosomes + y
(b) 44 autosomes - x (d) 44 autosomes - y
20. Tumors arise frequently, especially in
(a) younger animals
(c) younger animals & humans
(b) older animals
(d) older animals & Humans
21.Cancer is caused by
(a) virus (c) mutations in somatic cells
(b) Bacteria (d) Mutations in Germ cells
22. Programmed cell death helps in proper control of multicellular
(a) cell division (c) growth
(b) Development (d) Excretion
23. The ultimate source of all changes is
(a) Migration (c) Recombination
(b) Mutation (d) Meiosis
24. Partners of a gene pair are called
(a) genes (c) multiple Alleles
(b) Alleles (d) Loci
25. Interaction between different genes occupying different loci is
(a) Epistasis (c) Bombay phenotype
(b) Pleiotropy (d) Mutation
26. XY-XX type of sex determination is found in
(a) Birds, butterflies & moths
(c) Drosophila & Birds
(b) Grasshopper & birds
(d) Drosophila & man
27. XXY individual produced through non-disjunctional gemetes in Drosophila is a
(a) sterile female (c) fertile female
(b) Sterile male (d) Fertile male
28.Trait controlled by an allele that is expressed as dominant in one sex but recessive in the other
(a) sex-limited trait (c) x-linked trait
(b) sex influenced trait (d) y-linked trait
29. The gene for blue opsin is present on
(a) autosome 7 (c) x chromosome
(b) autosome 9 (d) y chromosome
30. Haemophilia A and B are
(a) autosomal recessive trait
(c) Non-allelic recessive sex-linked
(b) autosomal dominant trait
(d) non-allelic dominant sex-linked
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