Human Genetics Test 6

Total Questions:50 Total Time: 60 Min

Remaining:

 

Questions 1 of 50

Question:If mother has blood group B, father has A group, the offspring will be of.

Answers Choices:

A group

O group

any of the group

AB goup

Questions 2 of 50

Question:Number of chromosomes in human beings is:

Answers Choices:

44

46

48

50

Questions 3 of 50

Question:Condition of sex chromosomes in a male child of Down's syndrome will be:

Answers Choices:

XO

XY

XXY

XX

Questions 4 of 50

Question:Which of the following is related with high frequency of Down's syndrome?

Answers Choices:

Maternal age

Paternal age

Both

None

Questions 5 of 50

Question:The sex determination pattern in honeybee is called:

Answers Choices:

female haploidy

gametic diploidy

gametogony

haplodiploidy

Questions 6 of 50

Question:Larva of Bonellia settling near the proboscis of adult female develops into male due to:

Answers Choices:

substances secreted by proboscis

carbon dioxide in the environment

oxygen in environment

electrolytes in water

Questions 7 of 50

Question:Sex of an offspring is determined during:

Answers Choices:

fertilization

cleavage

crossing over

embryo formation

Questions 8 of 50

Question:The chromosome that determines the male sex in humans is called:

Answers Choices:

X-chromosome

Y-chromosome

W-chromosome

Z-chromosome

Questions 9 of 50

Question:Which of the following has the character of Klinefelter's syndrome?

Answers Choices:

XXY

XX

XY

XO

Questions 10 of 50

Question:In 1956, an XXXY type abnormality was seen in three patients which is:

Answers Choices:

female genotype

gynandromorph

male phenotype

female phenotype

Questions 11 of 50

Question:Amniocentesis is:

Answers Choices:

process to determine any disease in heart

process to determine any hereditary disĀ­ease in the embryo

process to know about the diseases of brain

all of these

Questions 12 of 50

Question:Foetal sex can be determined by examining cells from the amniotic fluid by looking for:

Answers Choices:

Barr bodies and sex chromosomes

Autosomes

Chiasmata

Kinetochore

Questions 13 of 50

Question:A pregnant woman who has done amniocentesis test finds an extra Barr body in her embryo. The syndrome which is likely to be associated with the embryo is:

Answers Choices:

Patau's syndrome

Klinefelter's syndrome

Down's syndrome

Edward's syndrome

Questions 14 of 50

Question:Colour blindness in man is:

Answers Choices:

sex-linked character

sex-influenced character

sex-limited character

dominant character

Questions 15 of 50

Question:In colour blindness, patients fail to distinguish:

Answers Choices:

red colour

green colour

red and green colour

none

Questions 16 of 50

Question:In which of the following situations could a woman also be colour blind?

Answers Choices:

If her father was normal and mother is a carrier

If her father was colour blind and mother normal (not carrier)

If her father was colour blind and mother a carrier

If her father was normal and mother colour blind

Questions 17 of 50

Question:If husband and wife have normal vision, but fathers of both were colour blind, probability of their first daughter to be colour blind is:

Answers Choices:

100%

50%

25%

0%

Questions 18 of 50

Question:A colour blind man marries a daughter of normal woman and colour blind man. The ratio of carrier daughter, colour blind daughters, normal sons and colour blind sons born to this couple will be:

Answers Choices:

1 : 0 : 1 : 0

2 : 1 : 1 : 2

1 : 1 : 1 : 1

1 : 2 : 2 : 1

Questions 19 of 50

Question:If both parents of a male child are normal, what are the chances of the child being colour blind?

Answers Choices:

it is impossible

it is possible only if mother's father was colour blind

it is possible only if father's mother was colour blind

it is possible even when all the four grandĀ­parents had normal vision

Questions 20 of 50

Question:A man has a wound. Normally a bleeding wound develops a clot and flow of blood stops. If this does not happen to the man, then he probably suffers from:

Answers Choices:

AIDS

Malaria

Haemophilia

Tetanus

Questions 21 of 50

Question:Sita's father has haemophilia, an X-linked recessive trait, but her husband does not. What is the chance that her son will have the disease?

Answers Choices:

0%

25%

50%

100%

Questions 22 of 50

Question:If Sita is carrier of haemophilic gene, has a daughter, but her husband is normal. what is the chance that daughter will have the disease?

Answers Choices:

0%

25%

50%

100%

Questions 23 of 50

Question:The fact that baldness is more common in men than in women could be explained on the basis that:

Answers Choices:

genes for baldness are located on X-chromosomes only

genes for baldness are located on Y-chromosomes only

baldness is dominant in males and recessive in females

genes are not involved and baldness is due to male hormones only

Questions 24 of 50

Question:Parents of blood groups 'O' and 'AB' cannot have a child of group AB because:

Answers Choices:

gene \({I^O}\) is dominant over the gene \({I^A}\)

gene \({I^O}\) is dominant over the gene \({I^B}\)

gene \({I^A}\) or \({I^B}\) is absent in one of the parents

gene \({I^A}\) and \({I^B}\) are absent in both parents

Questions 25 of 50

Question:Between persons of which two blood groups is the blood transfusion not possible.

Answers Choices:

AB (AB recipient)

and A (O donor)

O and B (O donor)

O and AB (AB donor)

Questions 26 of 50

Question:A person having blood group 'O' can receive blood of:

Answers Choices:

groups O, A. B and AB

groups A, B and AB

groups B and AB

group O only

Questions 27 of 50

Question:If one parent belongs to blood group A and the other to B, their children can possibly inherit:

Answers Choices:

AB group only

A and B groups only

O and AB groups only

All the four groups

Questions 28 of 50

Question:Which of the following is the universal blood donor?

Answers Choices:

Group 'O'

Group 'AB'

Group 'A'

Group 'B'

Questions 29 of 50

Question:Which of the following blood group is called universal recipient?

Answers Choices:

A

B

AB

O

Questions 30 of 50

Question:In developing foetus, erythroblastosis foetalis is caused by:

Answers Choices:

clumping of RBCs

failure of blood clotting

phagocytosis by WBCs

haemolysis

Questions 31 of 50

Question:The second pregnancy of a woman terminates due to anaemia of the foetus. She has never had a blood transfusion. On the basis of this, which of the following is correct?

Answers Choices:

Child from the first pregnancy is Rh positive

The husband of the woman is Rh positive

The woman is Rh negative

All of the above

Questions 32 of 50

Question:Rh factor may be responsible for:

Answers Choices:

Turner's syndrome

AIDS

Sickle-cell anaemia

Erythroblastosis foetalis

Questions 33 of 50

Question:What is the difference between ABO incompatibility and Rh factor?

Answers Choices:

First child dies

Does not require transfusion

Less haemorrhage

All of these

Questions 34 of 50

Question:Albinism is a:

Answers Choices:

deficiency disease

hereditary disease

contagious disease

sex-linked disease

Questions 35 of 50

Question:If an albino man marries albino woman, all children would have been:

Answers Choices:

normal

albino

suffering from leucoderma

none

Questions 36 of 50

Question:Albinism and phenylketonuria are disorders due to:

Answers Choices:

recessive sex genes

dominant sex genes

recessive autosomal genes

dominant autosomal genes

Questions 37 of 50

Question:Which one is a hereditary disease?

Answers Choices:

Cataract

Leprosy

Phenylketonuria

Blindness

Questions 38 of 50

Question:Phenylketonuria (PKU) is an inherited disease that is characterised by:

Answers Choices:

elimination of sugar in urine

increased occurrence of phenylalanine in blood and tissues

decreased occurrence of phenylalanine in blood and tissues

elimination of homogentisic acid in urine

Questions 39 of 50

Question:Ability of tasting PTC paper is a hereditary character. T' is dominant and 't' recessive. Which genotype will not be able to taste PTC?

Answers Choices:

TT

tt

Tt

None

Questions 40 of 50

Question:Improvement of the human race by improving the environmental conditions is:

Answers Choices:

Dysgenics

Euthenics

Eugenics

Euphenics

Questions 41 of 50

Question:Branch dealing with genetic engineering is:

Answers Choices:

Eugenics

Euphenics

Euthenics

None of these

Questions 42 of 50

Question:Which of the following cells is used for cloning "Dolly"?

Answers Choices:

Nerve cell

Liver cell

Udder cell

Muscle cell

Questions 43 of 50

Question:A population of genetically identical plants, called clones, is produced by:

Answers Choices:

tissue culture

self pollination

vegetative propagation

all of the above

Questions 44 of 50

Question:Sex chromosomes are found in cells of:

Answers Choices:

Testes

Ovaries

Kidneys and liver

All of the above

Questions 45 of 50

Question:The genotype of \(R{h^ + }\) person could be:

Answers Choices:

RR

Rr

rr

both 1 and 2

Questions 46 of 50

Question:If the blood group of father is O and of mother is AB, which of the following blood groups cannot be of their children?

Answers Choices:

O

A

B

A or B

Questions 47 of 50

Question:In human being, the chromosomal condition of male is:

Answers Choices:

44 AA + XO

44 AA + XX

44 AA + XY

44 AA + XXY

Questions 48 of 50

Question:In erythroblastosis foetalis which factors of the mother pass through placenta into the foetus?

Answers Choices:

Rh antigens

Agglutinins

Rh antibodies

ABO antibodies

Questions 49 of 50

Question:Alkaptonuria is caused by:

Answers Choices:

X linked recessive gene

autosomal recessive gene

X linked dominant gene

autosomal dominant gene

Questions 50 of 50

Question:Introduction of foreign genes for improving genotype is:

Answers Choices:

tissue culture

vernalization

biotechnology

genetic engineering