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12th Biology Weekly Test - 4 ( Zoology - Principles of Inheritance and Variation )

St. Britto Hr. Sec. School - Madurai

12th Biology Weekly Test - 4 ( Zoology - Principles of Inheritance and Variation )-Aug 2020

Time : 1.00 Hours

Part - A

Multiple Choice Question - Answer All Question

XX - XO type of sex determination is in ______.

Cockroaches
Drosophila
Humans
Moths

Who is the founder of Modern Eugenics movement?

Mendel
Darwin
Fransis Galton
Karl pearson

The _______deals with the control of several inherited human diseases especially inborn errors of metabolism

Euphenics
Eugenics
Euthenics
All of these

X chromosomes was discovered by _________.

Landsteiner
Henking
Stevens
Bridges

The ZO - ZZ type of sex determination is seen is _______.

moths
Reptiles
Human beings
Bugs

Kin selection is seen in _______

Honey bees
Drosophila
Grasshopper
Cockroach

Rh factor was discovered in the blood of ________.

Frog
Carp
Rhesus monkey
Calotes

The allele I^o is called _______

Dominant allele
null allele
null allele
epistatic allele

Scientists who contributed to karyotyping _______.

Tjio and Levan
John Cotto
Bridges
Wiener

Which of the following phenotypes is not possible in the progeny of the parental genotypic combination I^AI^O X I^AI^B?

AB
O
A
B

Pataus’ syndrome is also referred to as

13-Trisomy
18-Trisormy
21-Trisormy
None of these

The__________ is called null allele.

I^A
I^OI^B
I^O
I^BI^B

The number of Barr bodies follows _______.

N-0 Rule
N-3 rule
N-1 rule
N-2 rule

Which of the following phenotypes in the progeny are possible from the parental combination AxB?

A and B only
A,B and AB only
AB only
A,B,AB and O

The secretors have the I allele in _______.

tears
Gastric juice
Saliva
All of these

Which of the following is not correct?

Three or more alleles of a trait in the population are called multiple alleles
A normal gene undergoes mutations to form many alleles
Multiple alleles map at different loci of a chromosome
A diploid organism has only two alleles out of many in the population

Which of the following is true about Rh factor in the offspring of a parental combination DdXDd (both Rh positive)?

All will be Rh-positive
Half will be Rh positive
About ¾ will be Rh negative
About one fourth will be Rh negative

Klinefelters’ syndrome is characterized by a karyotype of

XYY
XO
XXX
XXY

__________ was first reported by John Cotto.

Erythroblastosis foetalis
Haemophilia
Colour blindness
Haplodiploidy

The XX - XY type of sex determination is also known as ________ type.

Haploid - diploid
Lygaeus
Gynandromorphs
Genic balance

Genic balance mechanism was first studied by ________.

John Cotto
C. B. Bridges
Bernstein
Wiener

“Universal Donor” and “Universal Recipients” blood group are _and___respectively

AB, O
O, AB
A, B
B, A

The blood group _________ is called universal recipient.

O
AB
B
A

Three children of a family have blood groups A, AB and B. What could be the genotypes of their parents?

I^A I^B and ii
I^A I^o and I^BI^o
I^B I^B and I^A I^A
I^A I^A and ii

Sex switch genes have been reported in ________.

Grasshopper
Cockroach
Wasp
Drosophila

The blood group _________ is called universal donor.

A
AB
B
O

The gene responsible for ________ is inherited as an autosomal recessive lethal gene in man

Huntington's chorea
Albinism
Colourblindness
Phenylketonuria

__________ are examples of mendelian disorders.

Thalassemia
Albinism
Phenylketonuria
Haemophilia

In gypsy moth we find _________ type of sex determination.

ZW - ZZ
XX - XY
XX - XO
ZO - ZZ

People with __________ have 4S chromosomes.

Turner's syndrome
Klinefelter's syndrome
Down's syndrome
Patau's syndrome

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