Which of the following may be used to obtain an $F_{2}$ generation ?

(a) allowing flowers on a parent plant to be self -pollinated

(b) allowing flowers on an $F_{1}$ plant to be self -pollinated

(c) cross-pollinating an $F_{1}$ plant with a parent plant

(d) cross-pollinating two parent plants

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Solution

allowing flowers on an $F_{1}$ plant to be self -pollinated

The $F_{2}$ (second filial) generation consists of the offspring from allowing the $F_{1}$ individuals to interbreed

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Similar questions

A tall violet flowered plant (TTVV) is crossed with a dwarf white flowered plant (ttvv). When the $F_{1}$ plants are self-pollinated, a total of 1600 $F_{2}$ plants are produced. How many plants of $F_{2}$ generation are similar to the original parents in terms of both genotype and phenotype?

Q. Study the given data and answer the questions following the data.

Parental plants cross fertilised and seeds collected	F₁ (first generation offspring)	F₂ (offspring of self pollination of F₁)
Male parent always bore red flowers.	330 seeds sown and observed	Out of 44 seeds, 33 seeds gave plants with red flowers and 11 seeds gave plants with white flowers
Female parent always had white flowers.	All 330 gave red flowers

(a) What is the term for this type of cross?
(b) What does the data of the column marked F₁ indicate?
(c) Express the genotype of the (i) parents (ii) F₁ progeny, and (iii) F₂ progeny.

A tall violet flowered plant (TTVV) is crossed with a dwarf white flowered plant (ttvv). When the $F_{1}$ plants are self pollinated, a total of 1600 $F_{2}$ plants are produced. Among them, how many plants are tall with white flowers?

Q. A pure tall plant bearing red colour flowers was crossed with a pure dwarf plant with white flowers. [5 MARKS]
(a) What would be the nature of offsprings in the F1 generation?
(b) If the offsprings of the F1 generation are self-pollinated, what would be the ratio of red flowers to white flowers in the F2 generation?
(c) What can you infer from the ratio obtained in (b)? Which law does it illustrate?

Q. Match the following and select the correct match.

	List I		List II
A	Mendel performed .................. between plants having alternate traits of a character, e.g., tall and dwarf, coloured flower and white flower.	1	Second filial
B	For this he removed .................. (emasculation) from 50% of the flowers of each type and used them as female parents.	2	Reciprocal crosses
C	.................. from the other flower were collected and dusted over the stigma of these flowers. The pollinated flowers were covered with paper bags and allowed to form pods with seeds.	3	Monohybrid cross
D	The cross involving two traits of a single character is called .....................	4	First filial generation
E	Cross involving traits of two characters is known as ..................	5	Anthers
F	The seeds of the cross were collected and sown next year. The plants were hybrid in nature. They constituted the ................ or $F_{1}$ generation.	6	Pollen
G	Self Breeding for $F_{2}$ and $F_{3}$ generations. Plants of $F_{1}$ generation were allowed to perform ................... or self-fertilization.	7	Third filial generation
H	Mendel collected seeds of the new generations. Plants raised from them were called ...................	8	Dihybrid cross
I	or $F_{2}$ ..............	9	Self-pollination
J	Further self-pollination of $F_{2}$ plants produced $F_{3}$	10	Generation

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Which of the following may be used to obtain an F2 generation ? (a) allowing flowers on a parent plant to be self -pollinated (b) allowing flowers on an F1 plant to be self -pollinated (c) cross-pollinating an F1 plant with a parent plant (d) cross-pollinating two parent plants

allowing flowers on an F1 plant to be self -pollinated The F2 (second filial) generation consists of the offspring from allowing the F1 individuals to interbreed

Which of the following may be used to obtain an $F_{2}$ generation ?

(a) allowing flowers on a parent plant to be self -pollinated

(b) allowing flowers on an $F_{1}$ plant to be self -pollinated

(c) cross-pollinating an $F_{1}$ plant with a parent plant

(d) cross-pollinating two parent plants

allowing flowers on an $F_{1}$ plant to be self -pollinated

The $F_{2}$ (second filial) generation consists of the offspring from allowing the $F_{1}$ individuals to interbreed