Principles Of Inheritance And Variations

Question 1

What is inheritance

Answer 1

It is the process by which characters are passed on from parent to progeny

Question 2

What is the basis of heredity

Answer 2

Inheritance

Question 3

Inheritance is the basis of

Answer 3

Heredity

Question 4

What are variations

Answer 4

It is the degree by which progeny differ from their parents

Question 5

Humans knew from as early as ___ that one of the causes of variation was hidden in sexual reproduction

Answer 5

8000-1000 BC

Question 6

What did early humans exploit to selectively breed and select for organisms that possessed desirable characters

Answer 6

Variations

Question 7

Through ___ and ___ from ancestral wild cows we have well known indian breeds

Answer 7

Artificial selection and domestication

Question 8

Give an example for a well know Indian breed cow

Answer 8

Sahiwal

Question 9

Sahiwal cows are in

Answer 9

Punjab

Question 10

It was during the __ that headway was made in the understanding of inheritance

Answer 10

Mid-19th century

Question 11

It was during the mid-19th century that headway was made in the understanding of ___

Answer 11

Inheritance

Question 12

Who conducted hybridisation experiments on garden pea

Answer 12

Gregor mendel

Question 13

For how many years did mendel experiment on garden peas

Answer 13

Seven

Question 14

Give the time period of mendel experiments

Answer 14

1856-1863

Question 15

Who proposed the laws of inheritance

Answer 15

Mendel

Question 16

When was the first time that statistical analysis and mathematical logic were applied in biology

Answer 16

During medel’s experiments

Question 17

Mendels experiments had a __ sampling size

Answer 17

Large

Question 18

What gave greater credibility to the data that mendel collected

Answer 18

Large sampling size of his experiments

Question 19

What proved that mendel’s results pointed to general rules of inheritance rather than being unsubstantiated ideas

Answer 19

Confirmation of his inferences from experiments on successive generations of his test plants

Question 20

Mendel investigated characters in the garden pea that were manifested as two __ traits

Answer 20

Opposing

Question 21

What allowed mendel to set up a basic framework of rules governing inheritance

Answer 21

Chosing of two opposing traits

Question 22

What type of pollination did mendel conduct on his true breeding pea lines

Answer 22

Artificial pollination/cross pollination

Question 23

Mendel used ___ pea lines

Answer 23

True breeding

Question 24

What is a true breeding line

Answer 24

One that, having undergone continuous self pollination, shows the stable trait inheritance and expression for several generations

Question 25

How many true breeeding pea plants did mendel select

Answer 25

14

Question 26

Mendel selected 14 true breeding pea plant varieties as pairs which were __ except for one character with __

Answer 26

Similar | Contrasting trait

Question 27

What seven characters did mendel choose For his experiments

Answer 27

``` Stem height Flower colour Flower position Pod shape Pod colour seed shape seed colour ```

Question 28

What was the dominant and recessive character of stem height

Answer 28

Dominant -tall | Recessive- dwarf

Question 29

What was the dominant and recessive character of flower position

Answer 29

Dominant axial | Recessive terminal

Question 30

What was the dominant and recessive character of flower colour

Answer 30

Dominant violet | Recessive white

Question 31

What was the dominant and recessive character of pod colour

Answer 31

Dominant green | Recessive yellow

Question 32

What was the dominant and recessive character of pod shape

Answer 32

Dominant inflated | Recessive constricted

Question 33

What was the dominant and recessive character of seed colour

Answer 33

Dominant yellow | Recessive green

Question 34

What was the dominant and recessive character of seed shape

Answer 34

Dominant round | Recessive wrinkled

Question 35

Mendel observed that all the F1 progeny plants were

Answer 35

Tall

Question 36

Mendel found that F1 always resembled

Answer 36

Either one of the parents

Question 37

What did mendel do to the F1 generation

Answer 37

He self pollinated it

Question 38

The proportion of plants that were dwarf in F2 generation were

Answer 38

1/4 of tge F2 plants

Question 39

Proportion of plans that were tall in F2 generation

Answer 39

3/4th of F2 plants

Question 40

The tall and dwarf trains in F2 generation were ___ to their parental type and did not show any __

Answer 40

Identical | Blending