Page 2 - 3-Home Assignment-I (Obj & Subj)-Accumulation of Variations, Inerited Traits

b. Two copies of each trait is inherited in sexually reproducing organism
c. For recessive trait to be expressed, both copies should be identical
d. Natural selection can alter frequency of an inherited trait.
8. Which one is a possible progeny in F2 generation of pure bred tall plant with round
seed and short plant with wrinkled seeds?
a. Tall plant with round seeds
b. Tall plant with wrinkled seeds
c. Short plant with round seed
d. All of the above
9. A cross between a tall plant (TT) and short pea plant (tt) resulted in progeny that were
all tall plants because
a. Tallness is the dominant trait
b. Shortness is the dominant trait
c. Tallness is the recessive trait
d. Height of pea plant is not governed by gene 'T' or 't'
10. In peas, a pure tall plant (TT) is crossed with a short plant (tt). The ratio of pure tall
plants to short plants in F2 is
a. 1 : 3
b. 3 : 1
c. 1 : 1
d. 2:1

Q. Questions Marks Level
NO
1. Which organism was used by Mendel for his experiments? What 1 E
is its scientific name?
2. What are inherited traits? 1 E
3. a) What is meant by DNA copying? Mention its importance in 3 AV
reproduction?
b) Mention any two contrasting traits noted by Mendel in garden
pea plant.
4. a) Differentiate between dominant and recessive traits. 3 AV
b) In Mendel’s monohybrid cross between tall and short pea
plants, all off springs were tall. What does this tell us about the
trait ? What is the ratio of tall and short plants in the F2
generation ?
5. How do Mendel experiments show that traits may be dominant or 3 D
recessive ?
6. Study the given data and answer the following questions 3 D
1 2 3
Parental plant Cross F1 Generation offspring F2 Generation
fertilized offspring
and seeds collected
after self- pollination of

F1 hybrid
Male parent- Round Green, Female parent- Wrinkled Yellow

2