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BIO CDF 24DEC

Total questions: 35

Worksheet time: 19mins

Name
Class
Date
1.

The study of the pattern of inheritance of characters from parents to offspring is called _ _ _ _ _

a)

STATISTICS

b)

GENETICS

c)

ELECTRONICS

d)

NOMENCLATURE

2.

The heredity units are called _ _ _ _ _

a)

DNA

b)

RNA

c)

GENES

d)

MUTATION

3.

The transmission of characters from parent to their offsprings is known as _ _ _ _ _

a)

HEREDITY

b)

GENETICS

c)

VARIATION

d)

MODERN GENETICS

4.

Clones are those organisms which are the _ _ _ _ _ copies of one another

a)

HYDROGEN

b)

NITROGEN

c)

OXYGEN

d)

CARBON

5.

Paired condition of chromosomes is known as _ _ _ _ _

a)

HAPLOID

b)

RNA

c)

DIPLOID

d)

DNA

6.

Unpaired condition of chromosomes is known as _ _ _ _ _

a)

DNA

b)

HAPLOID

c)

RNA

d)

DIPLOID

7.

_ _ _ _ _ in sexually reproducing organisms are caused due to the following factors like environment, crossing over and recombination of genes and mutation.

a)

GENETICS

b)

INHERITENCE

c)

VARIATION

8.

Variation in sexually reproducing organisms are caused due to the following factors like _ _ _ _ _, _ _ _ _ _ and recombination of _ _ _ _ _ and _ _ _ _ _

a)

ENVIRONMENT

b)

CROSSING OVER

c)

GENES

d)

MUTATION

9.

_ _ _ _ _ and _ _ _ _ _ are the genetic material in all organisms.

a)

DNA

b)

RNA

c)

PLASMA

d)

HAEMOGLOBIN

10.

The first study of inheritance was done by _ _ _ _ _ on _ _ _ _ _

a)

GJ MENDEL,PEA

b)

GJ MENDEL,FLOWER

c)

TH MORGAN,PEA

d)

TH MORGAN,FLOWER

11.

father of genetics is _ _ _ _ _

a)

TH MORGAN

b)

CHARLES DARWIN

c)

THEODOR SCHWANN

d)

GJ MENDEL

12.

father of modern/experimental genetics is _ _ _ _ _

a)

THEODOR SCHWANN

b)

CHARLES DARWIN

c)

TH MORGAN

d)

GJ MENDEL

13.

_ _ _ _ _: states that allele pairs separate or segregate during gamete formation, and randomly unite at fertilization.

a)

LAW OF DOMINANCE

b)

LAW OF SEGREGATION

c)

LAW OF INDEPENDENT ASSORTMENT

d)

MENDEL'S LAW OF SEGREGATION

14.

_ _ _ _ _: states that one of the factors for a pair of inherited traits will be dominant and the other recessive, unless both are recessive.

a)

LAW OF DOMINANCE

b)

LAW OF SEGREGATION

c)

MENDEL'S THIRD LAW

d)

MENDEL'S LAW OF SEGREGATION

15.

_ _ _ _ _: states that allele pairs separate during the formation of gametes. This means that traits are transmitted to offspring independently of one another.

a)

LAW OF DOMINANCE

b)

LAW OF INDEPEDENT ASSORTMENT

c)

LAW OF SEGREGATION

d)

MENDEL'S LAW OF INDEPEDENT ASSORTMENT

16.

In _ _ _ _ _ (only one contasting character is considered) When tall peat plants are crossed with short pea plants then in F1 generation only tall plants. were obtained.

a)

MONOHYBRID CROSS

b)

DIHYBRID CROSS

c)

TRIHYBRID CROSS

d)

TETRAHYBRID CROSS

17.

In Monohybrid Cross (only one contasting character is considered) When tall peat plants are crossed with short pea plants then in F1 generation only _ _ _ _ _ were obtained.

a)

SHORT PLANTS

b)

TALL PLANTS

18.

In F2 generation all plants are not tall but _ _ _ _ _ of them are short indicating that both tall and short traits were inherited in F1 but only tall trait was expressed due to dominance.

a)

ONE HALF

b)

TWO QUATER

c)

ONE QUATER

d)

TWO HALF

19.

In F2 generation all plants are not tall but one quarter of them are short indicating that _ _ _ _ _ traits were inherited in F1 but only tall trait was expressed due to dominance. Phenotype ratio: 3:1 Genotype ratio: 1:2:1

a)

TALL

b)

SHORT

c)

BOTH A n B

d)

NONE

20.

Phenotype ratio: _ _ _ _ _

a)

1:3

b)

1:2:1

c)

9:3

d)

3:1

21.

Genotype ratio:_ _ _ _ _

a)

1:3

b)

1:2:1

c)

1:3:1

d)

3:1

22.

In _ _ _ _ _ tall plant with round seeds were crossed with short plants with wrinkled seeds.

a)

MONOHYBRID

b)

DIHYBRID

c)

TRIHYBRID

d)

TETRAHYBRID

23.

In Dihybrid cross tall plant with _ _ _ _ _ were crossed with short plants with _ _ _ _ _.

a)

ROUND SEEDS,ROUND SEEDS

b)

WRINKLED SEEDS,WRINKLED SEEDS

c)

ROUND SEEDS,WRINKLED SEEDS

d)

WRINKLED SEEDS,ROUND SEEDS

24.

In F1 tall plants with _ _ _ _ _ seeds were obtained. On selfing these F1 plants with F2 produced Phenotype ratio.

a)

ROUND

b)

WRINKLED

25.

In F1 tall plants with round seeds were obtained. On selfing these F1 plants with F2 produced Phenotype ratio: _ _ _ _ _ .

a)

3:3:3:1

b)

9:3:9:1

c)

1:3:3:9

d)

9:3:3:1

26.

In humans, sex is determined by the inheritance of the paternal sex chromosome. Inheritance of a paternal _ _ _ _ _ chromosome produces a female, while inheritance of a _ _ _ _ _ chromosome produces a male.

a)

X,Y

b)

X,X

c)

Y,Y

d)

Y,X

27.

In humans, sex is determined by the inheritance of the paternal sex chromosome. Inheritance of a paternal X' chromosome produces a _ _ _ _ _ .

a)

MALE

b)

FEMALE

28.

In humans, sex is determined by the inheritance of the paternal sex chromosome. Inheritance of a paternal X' chromosome produces a female , while inheritance of a Y' chromosome produces a _ _ _ _ _.

a)

MALE

b)

FEMALE

29.

The sources of variation are _ _ _ _ _ recombination.

a)

DNA

b)

RNA

c)

MUTATION

d)

GENETIC

30.

_ _ _ _ _ is the process by which the sex of a person is determined.

a)

SEX DETERMINATION

b)

TRAITS DETERMINATION

c)

GENES DETERMINATION

d)

MUTATION DETERMINATION

31.

All human chromosomes are _ _ _ _ _ .

a)

PAIRED

b)

NOT PAIRED

32.

22 pairs are called _ _ _ _ _

a)

HETEROSOMES

b)

HOMOSOMES

c)

AUTOSOMES

d)

CHROMOSOMES

33.

Sex chromosomes are _ _ _ _ _

a)

ALLESOMES

b)

HETERSOMES

c)

HOMOSOMES

d)

ALLOSOMES

34.

Women have a _ _ _ _ _ chromosomes

a)

XY

b)

YX

c)

XX

d)

YY

35.

Men have a _ _ _ _ _ chromosomes

a)

YX

b)

XY

c)

XX

d)

YY