PRINCIPLES OF VARIATIONS

Question 1

Father of EXPERIMENTAL genetics?

Answer 1

Morgon

Question 2

Father of genetics?

Answer 2

Mendel

Question 3

Father of modern Genetics?

Answer 3

W.Bateson

Question 4

Father of genetics -

Answer 4

Mendel

Question 5

Punnett square-

Answer 5

RC Punnett

Question 6

• Chromosomal theory of Inheritance-

Answer 6

Sutton & Boveri

Question 7

Re-discovery of Mendel’s work -

Answer 7

De vries, Tschmark, Correns

Question 8

term ‘LINKAGE -

Answer 8

TH Morgan

Question 9

who named ‘X-Body’ ?

Answer 9

Henking

Question 10

Mendel’s working years?

Answer 10

1856-1863

Question 11

2 laws of Mendel to understand monohybrid cross?

Answer 11

1. Law of dominance
2. Law of segregation

Question 12

Mendel ka esa law jaha there are no exceptions…?

Answer 12

Law of Segregation

Question 13

Exceptions of Law of Dominance?

Answer 13

Incomplete and Co-dominance

Question 14

Example of incomplete dominance?

Answer 14

Mirabilis jalapa ( 4 o clock)
Antirrhinum majus (Snapdragon)

Question 15

Examples of Co dominance?

Answer 15

AB blood group
Sickel cell anaemia
Coat colour in cattle

Question 16

Multiple allele eg?

Answer 16

ABO blood group

Question 17

Polygenic INHERITANCE eg?

Answer 17

Human skin colour, weight, height, eye colour

Question 18

Pleiotropic gene eg?

Answer 18

Phenylketonuria, sickle cell anaemia

Question 19

Sex determination in humans?

Answer 19

Homozygous
XX FEMALE
XY- MALE

Question 20

Sex determination in grasshopper?

Answer 20

Heterozygous
XX- FEMALE
XO- MALE

Question 21

Sex determination in Birds?

Answer 21

ZZ- MALE
ZW- FEMALE

Question 22

Linkage discovered by? In?

Answer 22

Morgan, drosophila

Question 23

Independent assortment- how many types of gametes?
Linkage how many types of gametes?

Answer 23

4
2

Question 24

Linkage inversely proportional to?

Answer 24

Distance between genes and crossing over

Question 25

Examples of X linkage? X linkage is also known as?

Answer 25

Haemophilia, colour blindness, eye colour in drosophila. Sex linkage

Question 26

How many types of mutation? (2)

Answer 26

CHROMOSOMAL , GENE 1. EUPLOIDY 1. POINT 2. ANEUPLOIDY 2. FRAMESHIFT

Question 27

Sex linked recessive diseases?

Answer 27

HINDUSTAN CONVENT SCHOOL COLOUR BLINDNESS, HAEMOPHILIA

Question 28

Autosomal recessive diseases?

Answer 28

Sickle cell anemia, PKU, thallasemia

Question 29

Sickel cell anemia...?

Answer 29

Substitution of Glutamic acid to Valine at 6th Hb

Question 30

Thalassemia?

Answer 30

Hb me chain kam tha

Question 31

Pku?

Answer 31

Generally Phenylalanine converts to tyrosine in the presence of an enzyme But here, phenylalanine gets converted to phenyl pyruvic acid

Question 32

Down syndrome?

Answer 32

3 copies of 21st Trisomy chromosome

Question 33

Klinefelter?

Answer 33

Males normally- XY ...here XXY

Question 34

Turner syndrome?

Answer 34

Female generally XX, here, XO

Question 35

who coined the term genetics?

Answer 35

W.Bateson

Question 36

Artificial selection was done with?

Answer 36

Indian breeds example- Sahiwal cows in Punjab

Question 37

Dna total length?

Answer 37

2.2 metre

Question 38

how many types of linkages are there...and what are they?

Answer 38

complete , incomplete

Question 39

Law of inheritance proposed by?

Answer 39

Gregor mendel

Question 40

What did MENDEL construct? N how?

Answer 40

Cross pollination using true breeding pea line Artificially

Question 41

Mendel selected how many contrasting traits?

Answer 41

14 true breeding contrasting traits

Question 42

What is true breeding line?

Answer 42

Performing self pollination continuously for homozygous traits, due to which shows stable trait inheritance and expression for several generations

Question 43

What was performed in INHERITANCE OF 1 GENE?

Answer 43

Single char considered Performed monohybrid cross for all characters

Question 44

Punett was?

Answer 44

british geneticist

Question 45

exception of law of independent assortment?

Answer 45

linkage

Question 46

VIMP BLOOD EXAMPLE ABO BLOOD GROUP? AB BLOOD GROUP? ABO BLOOD GROUP IS REGULATED BY? HOW MANY ALLELES?

Answer 46

Multiple allelism, Co-dominance I gene has 3 alleles

Question 47

I gene decides?

Answer 47

Antigen (polymer of sugar)

Question 48

In pleiotropy what is involved ?

Answer 48

product of gene in diff metabolic pathway

Question 49

Single gene mutation causes?

Answer 49

1. Phenylketonuria 2. Mental retardation 3. Depigmentation

Question 50

Which types of crosses are based on the inheritance of a single gene?

Answer 50

Dominance Incomplete Dominance Codominance Multiple Allelism Pleiotropy

Question 51

intermediate skin colour is also k/as as?

Answer 51

mulatto

Question 52

what is under incomplete linkage?

Answer 52

loosely linked, tightly linked

Question 53

Morgan's experiment was based on how many characters?

Answer 53

The linkage was based on 2 char- body colour and wing type sex linked inheritance was based on 1 char- eye colour

Question 54

MORGAN EXPERIMENT...BODY COLOUR? EYE COLOUR? WING SIZE?

Answer 54

BROWN YELLOW WILD MUTANT RED WHITE WILD MUTANT NORMAL MINIATURE WILD MUTANT

Question 55

representation of position of linked genes on a chromosome is first given by?

Answer 55

Morgan's student Alfred Sturtevent

Question 56

how many types of mutation (2)?

Answer 56

1.