Acquired Characters

Q.

What is ${}^{n}C_r$ in math?

Q.

From the list given below, select the character which can be acquired but not inherited

1. Colour of eye

2. Colour of skin

3. Size of body

4. Nature of hair

Q.

What is meant by acquired and inherited traits? Explain with one example each.

Q.

One of the following traits cannot be inherited. This one is :
(a) colour of eyes
(b) colour of skin
(c) size of body
(d) nature of hair

Q. Which of the following scientists proposed the theory of inheritance of acquired characters?

1. Gregor Mendel
2. Charles Darwin
3. Jean-Baptiste Lamarck
4. August Weismann

Q. The tails of a male and female mouse are cut and they are mated to produce offspring. The offspring however has a tail. Why did the offspring develop a tail when its parents did not have one?

1. The offspring took medication to develop his tail
2. There is no change at the genetic level
3. Development of tail is a random event
4. Development of tail depends upon environment

Q.

Acquired traits are inherited by successive generations.

1. True

2. False

Q.

Why are the traits acquired during the lifetime of an individual not inherited? Explain

Q. Removal of the tail cannot change the genes in the germ cells of the mice. This is well described by-

1. Weismann Experiment
2. Urey and Miller’s Experiment
3. Mendel’s Experiment
4. Darwinism

Q.

Acquired traits are inherited by successive generations.

1. True

2. False

Q. Theory of acquired characters was put forward by

1. Lamarck
2. Hugo de Vries
3. Drawin
4. Wallace

Q.

One of the following traits of the parents cannot be passed on to their future generations. This trait is :
(a) cleft chin
(b) pointed chin
(c) scarred chin
(d) broad chin

Q.

Why are traits acquired during the lifetime of an individual not inherited? [2 MARKS]

Q.

Acquired traits are not carried by ……………………..

1. somatic cells

2. keratinized cells

3. germ cells

4. all of the above

Q. Question 19
From the list given below, select the character which can be acquired but not inherited

(a) colour of eye
(b) colour of skin
(c) size of body
(d) nature of hair​​​​​​​

Q. Surgically removing the tails of mice over several generations does not yield mice without tails. This proves that _______.

1. Cutting tail does not cause genetic change due to which it is not inherited
2. Neither a nor b is correct
3. Acquired characters during one's own life are inherited
4. Both a and b are correct

Q. The traits which are acquired by an organism during its lifetime are called:

1. Inherited traits
2. Skilled traits
3. None of the above
4. Acquired traits

Q. Who proposed the theory of acquired inheritance?

Q. Why, do you think, personality development is necessary?

Q. Due to Starvation if beetles have low body weight then this character is transfer to the next generation or not it is based on __________.

1. Inherited trait
2. Recessive trait
3. Acquired trait
4. Dominant trait

Q. What are inherited traits ?

1. Traits that are acquired due to environmental conditions.
2. Traits that are transmitted from the parents to the next generation.
3. Traits that are acquired naturally in the body.
4. Traits that are acquired after birth.

Q. A recognisable feature of human beings or any other organisms are called as

1. All of the above
2. Varieties
3. Species
4. Character

Q. Write true or false for the following statement:
An individual can pass on to its progeny the experiences of its lifetime.

1. True
2. False

Q. Which of the following is an example of natural selection?

1. Increased milk yield in dairy cattle
2. Insulin production in bacteria
3. Insertion of DNA into a chromosome
4. Industrial melanism in Peppered Moths

Q.

Acquired traits are not carried by ……………………..

1. somatic cells

2. keratinized cells

3. germ cells

4. all of them

Q. From the list given below, select the character which can be acquired but not inherited.

1. Colour of eye
2. Colour of skin
3. Size of body
4. Nature of hair

Q. Find the odd one w.r.t somaclonal variations 1) Produced during tissue culture 2) Some may be useful and stable 3) All are useful and very stable 4) Some of the significant variations have been taken up in plant breeding

Q. Inheritance of acquired characters was proposed by

1. Darwin
2. Lamarck
3. Wallace
4. Oparin

Q. A trait in an offspring of sexually reproducing organisms is influenced by:

1. DNA of only male gamete
2. DNA of only female gamete
3. Both male and female gametes
4. Neither male nor female gamete

Q.

1. True
2. False