Terms in this set (6) What trait in pea plants is being studied in the cross shown above? The trait that is being studied is the height of the pea plants.
What are the two alleles of this trait that is being studied?
What are the two alleles of this trait? The two alleles of this trait are the P and F1 traits.
Which is a dominant trait that Mendel observed in pea plants?
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 happened when Mendel crossed two traits of a character in a pea plant?
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 trait is expressed in the offspring when a tall pea plant is crossed with a short pea plant?
1 Answer. 25% of the heterozygous cross are short, and the offspring of a homozygous dominant and homozygous recessive pea plant will always display the dominant trait (phenotype), because they are heterozygous.
What are two forms of the trait of seed shape in pea plants?
List two forms of the trait of seed shape in pea plants. round and wrinkled.
What do you mean by recessive trait?
Refers to a trait that is expressed only when genotype is homozygous; a trait that tends to be masked by other inherited traits, yet persists in a population among heterozygous genotypes.
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.
How do you know which traits are dominant in an organism like a pea plant quizlet?
If the organism has two dominant alleles for a trait then the trait is dominant. If there is one dominant allele and one recessive, then the trait is still dominant. Why would a cross between a pea plant purebred for inflated pods and a pea plant purebred for constricted pods would produce only inflated-pod offspring.
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.
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.
Why did all of the F1 offspring of Mendel’s purple and white flowered pea cross always look like one of the two parental varieties?
Why did the F1 offspring of Mendel’s classic pea cross always look like one of the two parental varieties? One phenotype was completely dominant over another.
Why are the plants always tall when a tall pea plant is crossed with a short pea plant?
Why is the F1 progeny always of tall plants when a tall pea plant is crossed with a short pea plant? The progeny is not always tall, but most of the time tall because tallness is a dominant character and dwarfness is a recessive character. The ratio of tallness is to dwarfness is always 3:1 whenever they are crossed.
When 2 pea plants heterozygous for height are crossed what is the ratio of the resulting genotypes?
The expected genotype ratio when two heterozygotes are crossed is 1 (homozygous dominant) : 2 (heterozygous) : 1 (homozygous recessive). When a phenotypic ratio of 2 : 1 is observed, there is probably a lethal allele.
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.
Why did Mendel study pea plants quizlet?
Why did Mendel study pea plants? Mendel studied pea plants because they reproduced sexually and had traits that were easily observable.
When a pea plant is true breeding for a trait?
The result is highly inbred, or “true-breeding,” pea plants. These are plants that always produce offspring that look like the parent. 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.
What is a dominant trait example?
Freckles, cleft chin and dimples are all examples of a dominant trait. Having almond-shaped eyes is a dominant trait whereas having round eyes is a feature controlled by recessive alleles. The trait of detached earlobes, as opposed to attached earlobes, is dominant.
Which is a dominant trait?
dominant trait. In genetics, a trait that will appear in the offspring if one of the parents contributes it.
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) |
What is each trait of a plant determined by?
Each trait of a plant is determined by a pair of genes.
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