First, he generated plants that were purebred for two characteristics, such as seed color (yellow and green) and seed shape (round and wrinkled). These plants would serve as the P1 generation for the experiment.
What characteristics in peas did Mendel first study?
Mendel studied the inheritance of seven different features in peas, including height, flower color, seed color, and seed shape. To do so, he first established pea lines with two different forms of a feature, such as tall vs. short height.
What kind of pea plants did Mendel use for his first cross?
Mendel’s seminal work was accomplished using the garden pea, Pisum sativum, to study inheritance. This species naturally self-fertilizes, meaning that pollen encounters ova within the same flower. The flower petals remain sealed tightly until pollination is completed to prevent the pollination of other plants.
What are some characteristics of pea plants?
The characteristics of a pea plant are:
- Colour of seed (green or yellow)
- Shape of seed (round or wrinkled)
- Colour of pod (green or yellow)
- Shape of pod (constricted or inflated)
- Size of the plant (tall or dwarf)
- Position of flowers (axial or terminal)
- Colour of flower (purple or white)
What happened when he crossed the hybrid generation plants?
Mendel then crossed these pure-breeding lines of plants and recorded the traits of the hybrid progeny. He found that all of the first-generation (F1) hybrids looked like 1 of the parent plants. For example, all the progeny of a purple and white flower cross were purple (not pink, as blending would have predicted).
What happens when pea plants showing two different characteristics?
When pea plants with round and green seeds are crossed with wrinkled and yellow seed (both pure line), FI generation plants have round and yellow seed.
What are the 7 characteristics of pea plants?
On the next screen, he reveals that there are seven different traits:
- Pea shape (round or wrinkled)
- Pea color (green or yellow)
- Pod shape (constricted or inflated)
- Pod color (green or yellow)
- Flower color (purple or white)
- Plant size (tall or dwarf)
- Position of flowers (axial or terminal)
What happened when Mendel crossed a round seed with a wrinkled?
As a result of crossing these two pea variants, Mendel discovered that the round-seeded and wrinkled-seeded traits were two facets of the same character, suggesting to modern plant scientists that a single gene determines whether seeds are round or wrinkled.
Which of the character is dominant in pea plant?
So, the correct answer is ‘green pod‘.
Which among the following characters selected by Mendel in a pea plant is a recessive character?
Complete answer:
Green cotyledon colour was one of the recessive traits studied by Mendel in garden pea.
Which characteristics of pea plant was not used by Mendel?
Mendel chose Pisum sativum (pea plant) for his experiments. He selected seven traits of pea plant. It excludes plant colour. He chose characters like flower colour, flower position, stem length, seed shape, seed colour, pod shape and pod colour.
What happens when two heterozygous plants are crossed?
When two heterozygous plants are crossed, the resulting progeny mostly show the dominant phenotype. But, the recessive phenotype reappears.
What are the dominant and recessive characters of pea plant?
Green pod color is dominant and yellow is recessive. The shape of the pod has two traits – inflated and constricted. Inflated pod traits are dominant.
What were the characteristics of the plants in the first cross?
First, he generated plants that were purebred for two characteristics, such as seed color (yellow and green) and seed shape (round and wrinkled). These plants would serve as the P1 generation for the experiment.
Why did Mendel choose pea plant for his experiments Class 10?
Mendel selected pea plants for his experiments due to their easily detectable, contrasting characters.
Why did Mendel choose pea plant for his experiments give 4 reasons?
(i) The flowers of this plant are bisexual. (ii) They are self-pollinating, and thus, self and cross-pollination can easily be performed. (iii) The different physical characteristics were easy to recognize and study. (iv) They have a shorter life span and are the plants that are easier to maintain.
When 2 homozygous pea plants with contrasting traits are crossed a heterozygous hybrid plant is obtained This is a?
If the cross is carried out between a homozygous recessive organism and another organism showing the dominant phenotype and the organism showing the dominant phenotype has a heterozygous genotype for the trait then the resulting F1 generation will have half of the organisms of the dominant phenotype (i.e 50%) and the
What are the contrasting characters of pea plant?
7 pairs of contrasting characters in pea plants were studied by Mendel in his experiments.
- Pea shape: Round or Wrinkled.
- Pea color: Green or Yellow.
- Pod shape: Constricted or Inflated.
- Pod color: Green or Yellow.
- Flower color: Purple or White.
- Plant size: Tall or Dwarf.
- Position of flowers: Axial or Terminal.
When Gregor Mendel crossed a tall plant with a short plant the F1 plants inherited?
Multiply choice
| Question | Answer |
|---|---|
| When Gregor Mendel crossed a tall plant with a short plant, the F1 plants inherited | an allele for tallness from the tall parent and an allele for shortness from the short parent |
| The principle pf dominance states that | some alleles are dominant and others are recessive |
What are the characters Mendel selected for his experiment?
Answer: The characters which were chosen by Mendel for his study were stem height, flower colour, flower position, pod shape, pod colour, seed shape, seed colour. All these characters belong to different chromosomes in the pea plant.
When Round and yellow seeded pea plant are crossed with wrinkled and green?
Final answer: If a round, green seeded pea plant (RRyy) is crossed with a wrinkled, yellow seeded pea plant, (rrYY) the seeds produced in the F1 generation are round and yellow.