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A yellow colour flower plant indicated b...

A yellow colour flower plant indicated by YY is crossed with white color flower plant denoted by yy.
(a) following the Mendelian inheritance pattern , what would be the flower color is first filial generation ?
(b) Which Mendelian principle is illustrated in this cross ?
(c) Derive the cross and state the phenotypic ratio of yellow flowers to white flowers in `F_2` generation ?

Text Solution

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(a) `F_1` plants produce yellow colour flower plants .
(b) Law of dominance and Law of segregation
(c) Parent
Gamets
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Knowledge Check

  • In pea plants, yellow seeds are dominant to green . If a heterozygous yellow seed pant is crossed with a green seeded plant, what ratio of yellow and green seeded would you expect in F_1 generation ?

    A
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    B
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  • In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seed pant is crossed with a green seeded plant, what ratio of yellow and green seeded plants would you expect in F, generation?

    A
    9:1
    B
    3:1
    C
    1:3
    D
    50:50

  • (i) Read the following content and answer the question below : Pure-bred tall pea plants are first crossed with pure-bred dwar pea plant. The pea plants obtained in F_1 generation are then cross-bred to produce F_2 generation of pea plants. (a) What do the plants of F_1 generation look like ? (b) What is the ratio of tall plants to dwarf plants if F_2 generation? (c ) Which type of plants were missing in F_1 generation but reppeared in F_2 generation? (ii) Why is the sino-atrial node called the pacemaker of heart ?

    A
    both correct
    B
    assertion only right
    C
    reason only right
    D
    both wrong

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