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1. Question marks are mentioned with each Question.
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5. This is a ONE TIME attempt test. Once started, it cannot be reversed or attempted again.
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1
Genes control a trait while _______________ help in the expression of a trait.
Fats
Carbohydrates
Proteins
Vitamins
2
A pair of contrasting characters is called __________________
phenotype
genotype
allele
gene
3
____________________ form the basis of heredity.
Evolution
Reproduction
Variation
All of these
4
Each pea plant must have _______________ sets of all genes,
One
Three
Two
Four
5
The number of autosomal chromosomes present in human beings is ______________
22
44
23
46
6
A ____________ contains the information for making proteins in the cell.
Chromosomes
Chromatin
Genes
Nucleic Acid
7
How many chromosomes are present in a human gamete?
26
48
8
Law of independent assortment given by Mendel started through ____________
Dihybrid cross
Monohybrid cross
Both of these
None of these
9
____________ of the unborn child depends on whether the zygote has XX or XY chromosomes.
Sex
Size
Health
Maturity
10
Alternative forms of the gene are called ______________
Factors
Alleles
Dominant genes
Homozygous genes
11
Assertion: Chromosomes are known as hereditary vehicles.
Reason: The chromosomes are capable of self-reproduction and maintaining morphological and physiological properties through successive generation.
If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
If Assertion is correct but Reason is incorrect.
If Assertion is incorrect but Reason is correct.
12
Reason: The chromosomes are capable of self - reproduction and maintaining morphological and physiological properties through successive generations.
If both Assertion and Reason are correct , but Reason is not the correct explanation of Assertion.
13
A colour blind person has difficulty in seeing _______________
All colours
Red colour only
Red, green and pale tints
Violet mid blue
14
Heredity deals with the study of _______________
Resemblances and differences between the parents and offsprings.
Resemblances between the parents and offsprings.
Differences between the parents and offspring.
None of the above.
15
From heredity point of view which marriage is not suitable ______________________
Man Rh (-) and Woman Rh (+)
Both Rh (+)
Both Rh (-)
Man Rh (+) and Woman Rh (-)
16
Cross between F1 Generation and recessive parent is ___________________
Back cross
Real cross
Test cross
Main cross
17
A pure tall plant can be differentiated from a hybrid tall plant _____________________
By measuring length of plant
By spraying gibberellins
if all plant are tall after self-pollination
if all plants are dwarf after self-pollination
18
Eye color in the fruit fly is said to be sex-linked. This simple means that the gene for eye colour is ______________________
On the Y chromosome
On an autosome.
On the X and Y chromosomes
On the X chromosome.
19
Which of the following symbols are representing chromosomes of birds?
ZZ-ZW
XX-XY
XO-XX
ZZ-WW
20
A heterozygous Red-eyed female Drosophila mated with a white-eyed male would produce ______________________
Red-eyed females and white-eyed males in the
White - eyed females and red-eyed males in the
Half red and half white-eyed females and all white eyed males in the
Half red and half white-eyed females as well as males in the