When Mendel crossed a true-breeding short plant with a true-breeding tall plant, all the offspring were tall. Which term describes the gene for tallness?
In Mendel's first experiment with pea plants, he observed a typical ratio of 3:1 for dominant to recessive traits. This ratio occurs when a heterozygous individual (Aa) is crossed with another heterozygous individual (Aa), resulting in a 25% chance of the offspring inheriting the recessive trait.
Allele for tall stem (dominant)- T Allele for short stem (recessive)- t The F1 generation would all be tall-stemmed plants with the genotype Tt (heterozygous). The F2 generation would consist of: 25% Tall plants with the genotype TT (homozygous dominant) 50% Tall plants with the genotype Tt (heterozygous) 25% Short plants with the genotype tt (homozygous recessive)
In his first set of experiments, Mendel crossed purebred pea plants with different traits, such as tall and short plants. He observed the inheritance patterns in the offspring of these crosses over several generations. Mendel showed that traits are inherited independently and proposed the laws of segregation and independent assortment.
When Mendel crossed pea plants with green pods with those with yellow pods, the offspring all had green pods if the green pod parent was homozygous. If the green pod parent was heterozygous, then half the offspring had green pods and half had yellow pods.
3.1
The terms Mendel used to describe the heterozygous pea plant was the hybrid term....i hope that helped
When Mendel crossed short tt pea plants (homozygous recessive) with short pea plants that were heterozygous for height (Tt), the offspring would display a phenotypic ratio of 1 short (tt) to 1 tall (Tt). This is because the short plants (tt) can only contribute recessive alleles, while the heterozygous plants (Tt) can contribute either a dominant (T) or a recessive (t) allele. Therefore, half of the offspring would be tall and half would be short.
In Mendel's first experiment with pea plants, he observed a typical ratio of 3:1 for dominant to recessive traits. This ratio occurs when a heterozygous individual (Aa) is crossed with another heterozygous individual (Aa), resulting in a 25% chance of the offspring inheriting the recessive trait.
dihybrid cross, which involves studying the inheritance of two different traits at the same time. Mendel's observations from dihybrid crosses led to the development of his principles of independent assortment and ultimately to the law of inheritance.
he used plants that were NOT true breeding!
100% heterozygous pea plants. Showing the dominant trait
because it helped Mendel discover which plants would be crossed to produce offspring.
He crossed F1 plants to each other
All the offspring were tall plants. This is because the tall trait is dominant over the short trait in Mendel's experiments on pea plants.
All the offspring were purple because Mendel was dealing with simple genetic dominance. The purple true breeding parent was homozygous dominant and the true breeding white parent was homozygous recessive. When those two are crossed they create only heterozygous offspring (look up a punnett) and since this is simple dominance those heterozygous will show the phenotype of the dominant allele which is purple.
He used the term hybrid.
Tt and TT were the genotypes of the true breeding plants that Mendel used in his two factor cross.