Mendel called the visible form the dominant trait and the hidden form the recessive trait. In the second generation, after plants were allowed to self-fertilize (pollinate themselves), the hidden form of the trait reappeared in a minority of the plants.
What is a trait list two traits that are found in 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 do we call the result of the genotype for example the Colour of the peas )?
The phenotype is the physical manifestation of an organism’s allellic combination (genotype). For the pea plants, if the red allele is dominant and the white allele is recessive, only two phenotypes are possible.
What happened to the green trait in Mendel’s pea plants?
Mendel’s gene involved in pea color decides whether the chlorophyll in the pea will be broken down and degraded. When this gene isn’t working, the chlorophyll stays around and the pea is green. So in this case the recessive trait is indeed due to a broken gene.
What did Gregor Mendel use to discover the principles that rule heredity?
Gregor Mendel, through his work on pea plants, discovered the fundamental laws of inheritance. He deduced that genes come in pairs and are inherited as distinct units, one from each parent. Mendel tracked the segregation of parental genes and their appearance in the offspring as dominant or recessive traits.
What are the traits of the pea plants?
What Are The 7 Characteristics Of Pea Plants?
- Colour (green or yellow)
- Shape (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 traits of pea plants come in pairs?
- A Rough and smooth.
- C Yellow and green.
- D Short and tall. Mendel found that pea plants have some traits which come in pairs like the seed is either rough or smooth. It is either yellow or green, and the height of the plant is either tall or short.
What happened when Mendel crossed two traits of a character in a pea plant?
Answer: Mendel also experimented to see what would happen if plants with 2 or more pure-bred traits were cross-bred. He found that each trait was inherited independently of the other and produced its own 3:1 ratio. This is the principle of independent assortment .
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.
What do we call the results of the genotype?
Some genotypes contribute to an individual’s observable traits, called the phenotype.
What traits did Mendel study in pea plants?
During this time, Mendel observed seven different characteristics in the pea plants, and each of these characteristics had two forms (Figure 3). The characteristics included height (tall or short), pod shape (inflated or constricted), seed shape (smooth or winkled), pea color (green or yellow), and so on.
In what two ways did Mendel control how the pea plants bred?
Mendel controlled breeding by separating the male and female parts of the flowers so they couldn’t reproduce on their own. Next, he used a small brush to move pollen between plants. Lastly, pea plants had a number of visible traits, called phenotypes, that were easy to identify.
What did Mendel learn about his pea plants quizlet?
Why did Mendel study pea plants? Mendel studied pea plants because they reproduced sexually and had traits that were easily observable.
What was Mendel’s most significant conclusion from his research with pea plants?
) What was the most significant conclusion that Gregor Mendel drew from his experiments with pea plants? Traits are inherited in discrete units, and are not the results of “blending.”
What was unique about Mendel’s approach to explain his pea experiment results?
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 conclusion did Mendel draw from his experiments about traits?
Upon compiling his results for many thousands of plants, Mendel concluded that the characteristics could be divided into expressed and latent traits. He called these, respectively, dominant and recessive traits. Dominant traits are those that are inherited unchanged in a hybridization.
What traits are dominant and recessive?
| Difference Between Recessive and Dominant Traits | |
|---|---|
| Dominant Trait | Recessive Trait |
| Examples in Humans | |
| V-shaped hairline Almond-shaped eyes Right handedness Detached earlobes Dark hair Brown eyes | Straight hairline Round eyes Left handedness Attached earlobes Blond hair, red hair Blue eyes (can also be a polygenetic trait) |
Why did Mendel choose pea plant for his experiments Class 10?
Mendel choose pea plants for his experiments because of the following 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.
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.
How many traits in garden pea plants selected by Mendel for the genetics experiment were recessive?
There were 7 characters of the pea plant which were selected by Mendel for the experiments. 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.
How did Mendel explain that it is possible that a trait is inherited but not expressed in an organism?
Some traits that are inherited may not express themselves. Such hidden traits are known as recessive traits. Mendel explained this phenomenon with the help of monohybrid cross. In a monohybrid cross performed by Mendel, tall plant was crossed with a dwarf plant which produced all tall plants in F1 progeny.
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