A Mendelian experiment consisted of breeding pea plants bearing violet flowers with pea plants with white flowers. What will be the results in F1 progeny ?
According to the Mendelian experiment, the violet colour of the flowers is the dominant trait and the white colour of the flowers is recessive.
When pea plants bearing violet flowers breed with pea plants with white flowers, the resulting flowers of the F1 progeny will be heterozygous dominant in nature. Therefore, all flowers will be of violet flower.
Related Articles A Mendelian experiment consisted of breeding tall pea plants bearing violet flowers with short pea plants bearing white flowers. The progeny all bore violet flowers, but almost half of them were short. This suggested that the genetic make up (or genotype) of the tall parent can be depicted as:(a) TTWW (b) TTww (c) TtWW (d) TtWwGive reason for your choice.
Pure-bred tall pea plants are first crossed with pure-bred dwarf pea plants. The pea plants obtained in F1 generation are then cross-bred to produce F2 generation of pea plants.(a) What do the plants of F1 generation look like? (b) What is the ratio of tall plants to dwarf plants in F2 generation? (c) Which type of plants were missing in F1 generation but reappeared in F2 generation?
(a) Why is the F1 Progeny Always of Tall Plants When a Tall Pea Plant Is Crossed with A Short Pea Plant? (b) How Is F2 Progeny Obtained by Self-Pollination of F1 Progeny Different from F1 Progeny? Give Reason for This Observation. (c) State A Conclusion That Can Be Drawn On the Basis of This Observation.
Mendel, In One of His Experiments with Pea Plants, Crossed A Variety of Pea Plant Having Round Seeds with One Having Wrinkled Seeds. State Mendel Observations Giving Reasons of F1 and F2 Progeny of This Cross. Also, List Any Two Contrasting Characters, Other Than the Round Seeds of Pea Plants That Mendel Used in His Experiments.
A blue colour flower plant denoted by BB is crossbred with a white colour flower plant denoted by bb.(a) State the colour of flower you expect in their F1 generation plants.(b) What must be the percentage of white flower plants in F2 generation if flowers of F1 plants are self- pollinated?(c) State the expected ratio of the genotypes BB and Bb in the F2 progeny.
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 F1 generation but re-emerge in F2 generation. Which of the plants A and B are: (i) tall, and (ii) dwarf? Give reason for your answer.
For his experiments on heredity, Mendel used:(a) papaya plants (b) potato plants (c) pea plants (d) pear plants
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
Vegetative propagation refers to the formation of new plants from the following existing organs of the old plants:(a)stems, roots and flowers (b) stems, roots and leaves(c) stems, flowers and fruits (d)stems, leaves and flowers
(a) What will you get in the F1 and F2 generations in the following cross? Pure tall pea plant x Pure dwarf pea plant(b) Is it an example of monohybrid cross or dihybrid cross?
Name the plant Mendel used for his experiment. What type of progeny was obtained by Mendel in F1 and F2 generations when he crossed the tall and short plants? Write the ratio he obtained in F2 generation plants.
Mendel first crossed pure-bred pea plants having round-yellow seeds with pure-bred pea plants having wrinkled-green seeds and found that only round-yellow seeds were produced in the F1 generation. When F1 generation pea plants having round-yellow seeds were cross-bred by self pollination, then peas having round-yellow seeds, round green seeds, wrinkled-yellow seeds and wrinkled-green seeds were produced. Mendel collected a total of 2160 seeds.(a) What will be the number of (i) round green seeds (ii) wrinkled green seeds (iii) round yellow seeds, and (iv) wrinkled-yellow seeds? (b) Which 'ratio' as established by Mendel have you made use of in answering the part (a) above?
What are Flowers ?
Botanical Name of Pea
A person first crossed pure-bred pea plants having round-yellow seeds with pure-bred pea plants having wrinkled-green seeds and found that only A-B type of seeds were produced in the F1 generation. When F1 generation pea plants having A-B type of seeds were cross-bred by self-pollination, then in addition to the original round-yellow and wrinkled-green seeds, two new varieties A-D and C-B type of seeds were also obtained.(a) What are A-B type of seeds? (b) State whether A and B are dominant traits or recessive traits. (c) What are A-D type of seeds? (d) What are C-B type of seeds? (e) Out of A-B and A-D types of seeds, which one will be produced in (i) minimum numbers, and (ii) maximum numbers, in the F2 generation?
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