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Home » GAT Subject » Aptitude Test - 46
Hassan
1.______ deteriorates drastically upon inbreeding:
A. Carrot
B. Okara
C. Brinjal
D. Carrot
2.______ in Ladino clover is governed by two dominant alleles, one produces cyanogenic glycoside, while the other releases the enzyme to catalyze its release from gloycoside:
A. Oxalic acid
B. IAA
C. HCN
D. Oxalic acid
3.______ are examples of protandrous species:
A. Avocados
B. Walnuts
C. Carrots
D. Avocados
4.Origin of Species by means of Natural Selection' was given by:
A. Lamark
B. Linnaeus
C. Charles Darwin
D. Lamark
5.Radish' is an example of:
A. Fusiform root
B. Napiform root
C. Conical root
D. Fusiform root
6."Experiments in Plant Hybridization" a paper of G. Mendal was first published in the year:
A. 1905
B. 1787
C. 1866
D. 1905
7."If a gene is represented in an infinitely large random-mating population by adaptively neutral alleles, A and a, in the ration of qA: (1-q)2 aa = 1" is known as:
A. Stanford-Suneson law
B. Weibe-Thomas law
C. Briggs-Harlan law
D. Stanford-Suneson law
8.2n - 1 is a:
A. Monosomic
B. Transonic
C. Tetrasomic
D. Monosomic
9.2n denotes:
A. Number of homozygote produces by selfing a F1
B. Number of types of gametes produced by F1
C. Number of types of heterozygote produced by selling F1
D. Number of homozygote produces by selfing a F1
10.A cell or an organism having one chromosome pair in addition to the normal somatic compliment of the species is:
A. Monosomic
B. Nullisomic
C. Tetrasomic
D. Monosomic
11.A character dermined by many genes and does not show discrete variation is known as:
A. Qualitative character
B. Oligogenic character
C. Quantitative character
D. Qualitative character
12.A complex of communities of plants and animals of a region existing under identical climatic conditions is called as:
A. Biome
B. Ecosystem
C. Ecological complex
D. Biome
13.A condition in which pollination and fertilization take place in an unopened flower is termed as:
A. Homogamy
B. Apogamy
C. Polygamy
D. Homogamy
14.A criss-cross inheritance is shown by:
A. Sex-influenced character
B. Polygamy
C. Sex-linked character
D. Sex-influenced character
15.A cybrid is:
A. A sex hybrid
B. A hybrid formed by cell fusion
C. A plant produced by cell culture
D. A sex hybrid
16. A dry, one chambered and one seeded fruit developing from a superior ovary with the hard and woody pericarp is:
A. Achene
B. Caryopsis
C. Composite fruit
D. Achene
17.A fruit, which develops from an inflorescence, is known as:
A. Simple fruit
B. Aggregate fruit
C. Composite fruit
D. Simple fruit
18. A fruit, which is collection of simple fruits developing from the apocarpous pistil of a flower, is known as:
A. Multiple fruit
B. Aggregate fruit
C. Complex fruit
D. Multiple fruit
19.DNA model was studied with help of x-rays by:
A. Wilkins
B. Watson
C. Crick
D. Wilkins
20.Cenetic information is encoded in the structure of which of these:
A. Enzymes
B. DNA
C. Structure proteins
D. Enzymes
21.Theory of one gene - one enzyme was proposed by:
A. Watson and Crick
B. Beadle and Tatum
C. Scleiden and Schwann
D. Watson and Crick
22.Central dogma of molecular genetics is:
A. DNA - RNA - Proteins
B. RNA - DNA - Proteins
C. Proteins - DNA - RNA
D. DNA - RNA - Proteins
23.Five major types of histones are:
A. H1, H2, H3, H4 and H5
B. H1, H2a, H2b, H3 and H4
C. H1a, H1b, H2a, H2b and H3
D. H1, H2, H3, H4 and H5
24.Genes are made up:
A. Histones
B. Polynucleotides
C. Hydrocarbons
D. Histones
25.Term gene refers to:
A. A portion of DNA
B. A portion of RNA
C. Both (a) & (b)
D. A portion of DNA
26.Which of these is carrier of genetic information:
A. tRNA
B. DNA
C. mRNA
D. tRNA
27.Nucleic acid was discovered by:
A. Miescher
B. Sutton
C. Khorana
D. Miescher
28.Chromosomes are made up of:
A. DNA and RNA
B. RNA and proteins
C. DNA, RNA and proteins
D. DNA and RNA
29. Dr. Khorana got Nobel Prize for his researches on:
A. Hormones
B. Immunology
C. Genetic Code
D. Hormones
30.Biochemical nature of gene was established by:
A. Avery and Macleod
B. Avery, Macleod and McCarty
C. Jacob and Monad
D. Avery and Macleod
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