Thomas. Mendel worked with seven distinct characteristics of pea plants: plant height, pod shape and color, seed shape and color, and flower position and color. He carefully sorted the progeny derived from the parent plants based on these characteristics and counted the number that inherited each character.
What was so special about Mendel’s experiment with the peas?
By experimenting with true-breeding pea plants, Mendel avoided the appearance of unexpected traits in offspring that might occur if the plants were not true breeding. The garden pea also grows to maturity within one season, meaning that several generations could be evaluated over a relatively short time.
What kind of peas did Mendel use?
Mendel carried out his key experiments using the garden pea, Pisum sativum, as a model system.
Why did Mendel use pea plants as his model?
Gregor Mendel chose the pea plants for his experiments because the garden pea is an ideal subject in the study of genetics for the following reasons: Presence of observable traits with contrasting forms. It produces many offspring in one cross. Short life cycle.
What are the advantages of using pea plants to study genetics?
What were the advantages of using pea plants for genetic studies? Peas can be “true-breeding” meaning that their offspring are identical to the parent plant. This species reproduces fast and makes many offspring, and self-breeding is easy to prevent by cutting off the stamens of the flowers.
What 7 traits did Mendel study in his 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 are four advantages of Mendel’s pea plant model?
Its short life cycle made it possible to study several generations within a short period. (v) It is easy to cultivate. (vi) It is easy to cross because pollen from one plant can be introduced to the stigma of another plant. The flower and fruit of garden pea A.
What happens when pea plants showing two different characteristics?
Answer. Answer: If the inheritance of more than one pair of characters is studied simultaneously the factors of genes for each pair of characters sort out independently.
What happened when Mendel crossed two traits pea plants?
In one of the experiments with pea plants, Mendel observed that when a homozygous tall pea plant (TT) is crossed with a homozygous dwarf pea plant (tt), in the first generation, only tall plants appear.
What happens when pea plants showing two different characteristics rather than just one are bred with each other Class 10?
According to this law when two characters are taken into consideration for a cross (dihybrid cross), each one of these characters is independent to pass in the subsequent generation. It means that inheritance of a pair of factors or genes is independent of the other pairs of factors or genes.
What happened when Mendel crossed pea plants?
Mendel crossed pure lines of pea plants. Dominant traits, like purple flower colour, appeared in the first-generation hybrids (F1), whereas recessive traits, like white flower colour, were masked. However, recessive traits reappeared in second-generation (F2) pea plants in a ratio of 3:1 (dominant to recessive).
How did Mendel cross pollinate pea plants?
Mendel was interested in the offspring of two different parent plants, so he had to prevent self-pollination. He removed the anthers from the flowers of some of the plants in his experiments. Then he pollinated them by hand with pollen from other parent plants of his choice.
How Did Mendel’s experiments show that different traits are inherited independently explain?
Answer: Mendel’s dihybrid cross shows that traits are inherited independently. When a cross was made between a green pea plant with round seeds and a yellow pea plant with wrinkled seeds , the F 1 progeny plants were all yellow with round seeds. This indicated that yellow color and round seeds were the dominant traits.
What Did Mendel’s cross-pollination of pea plants prove?
Mendel’s cross-pollination of pea plants proved that genes of two separate organisms are passed to their offspring.
Which of the following characteristics of pea plants was not used by Mendel in his experiments?
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.
Why are some pea plants tall and short in nature?
The pea plant will grow taller if the gene sequence is such that it creates a hormone that impacts the height attribute. If the gene sequence is in such a way that this hormone is only produced in little amounts and is controlled by specific conditions, it will have no effect on height growth. It will be a short plant.
Why do we find more tall pea plants than dwarf pea plants Class 10?
Expert-verified answer
Gene for tall plant is T and dwarf plants is t. In nature, tall pea plant is found more because it is a dominant trait. Mendel came to know this when he performed cross between pure breeding tall ( TT) and pure breeding dwarf plant ( tt).
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