Pure-bred tall pea plants are first crossed with pure-bred dwarf pea plants. The pea plants obtained in `F_(1)` generation are then cross-bred to produce `F_(2)` generation of pea plants.
(i) What do the plants of `F_(1)` generation look like ?
(b) What is the ratio of all plants to dwarf plants in `F_(2)` generation ?
(c) Which type of plants were missing in `F_(1)` generation but reappeared in `F_(2)` generation ?

(a) If we cross pure - bred tall (dominant ) pea plants with pure - bred dwarf ( recessive ) pea plant we get pea plants of F_ 1 generation. If we now self- cross the pea plants of F_1 generation, then we obtain pea plants of F_ 2 generation. (i) What do the plants of F_1 generation look like ? (ii) What is the ratio of tall plants dwarf plants in F_2 generation ? (iii) State the type of plants not found in F_1 generation but appeared in F_2 generation, mentioning the reason for the same. (b) What are homologous structures ? Give an example. Is it necessary that homologous structures always have common ancestors ?

" Heterozygous tall pea plant is crossed with a dwarf pea plant.This is "

Pure tall pea plant with round seeds is crossed with pure dwarf pea plant with wrinkled seeds . The probability of genotype ttRR in F_2 generation is

TT Pea plant is crossed to tt plant. F_(2) generation will have

On crossing two heterozygous tall plants (Tt), a total of 500 plants were obtained in F_(1) generation. What will be the respective number of tall and dwarf plants obtained of F_(1) generation ?

Pure-bred pea plants A are crossed with pure-bred pea plants B. It is found that the plants which look like A do not appear in F_(1) generation but re-emerge in F_(2) generation. Which of the plants A and B are : (i) tall, and (ii) dwarf ? Give reason for your answer .