Mendel tested whether the tall plants in the F1 generation were exactly the same as the tall plants in the parent generation through a test cross. Initially, he established a pure-breeding parental generation, one with the trait for tallness (TT) and another with the trait for shortness (tt). Upon cRead more
Mendel tested whether the tall plants in the F1 generation were exactly the same as the tall plants in the parent generation through a test cross. Initially, he established a pure-breeding parental generation, one with the trait for tallness (TT) and another with the trait for shortness (tt). Upon crossing these true-breeding plants, the F1 generation exhibited all tall plants, suggesting dominance of the tall trait. To investigate the genetic composition of the F1 tall plants, Mendel performed a test cross by crossing an F1 tall plant (Tt) with a true-breeding short plant (tt). If the F1 tall plants were pure-breeding for tallness, all offspring in the F2 generation would be tall. However, if the F1 tall plants carried the recessive trait for shortness, a 1:1 ratio of tall to short plants would emerge in the F2 generation. Mendel observed approximately 25% short plants in the F2 generation, confirming that the F1 tall plants were not identical but heterozygous for the tall and short traits. This test cross provided crucial evidence for Mendel’s laws of inheritance.
If progeny were to inherit a single whole gene set from each parent, the experiment depicted in the figure would fail to capture the essence of sexual reproduction. The fundamental advantage of sexual reproduction lies in the generation of genetically diverse offspring through the combination and shRead more
If progeny were to inherit a single whole gene set from each parent, the experiment depicted in the figure would fail to capture the essence of sexual reproduction. The fundamental advantage of sexual reproduction lies in the generation of genetically diverse offspring through the combination and shuffling of genetic material from both parents. This diversity provides a reservoir of potential traits, enhancing a population’s adaptability and evolutionary success. If each progeny received an entire gene set from a single parent, it would mimic a form of asexual reproduction, leading to genetically uniform offspring. Such uniformity hampers adaptability and limits the evolutionary potential of a population, as it lacks the genetic variation necessary for survival in changing environments.
How did Mendel test whether the tall plants in the F1 generation were exactly the same as the tall plants of the parent generation?
Mendel tested whether the tall plants in the F1 generation were exactly the same as the tall plants in the parent generation through a test cross. Initially, he established a pure-breeding parental generation, one with the trait for tallness (TT) and another with the trait for shortness (tt). Upon cRead more
Mendel tested whether the tall plants in the F1 generation were exactly the same as the tall plants in the parent generation through a test cross. Initially, he established a pure-breeding parental generation, one with the trait for tallness (TT) and another with the trait for shortness (tt). Upon crossing these true-breeding plants, the F1 generation exhibited all tall plants, suggesting dominance of the tall trait. To investigate the genetic composition of the F1 tall plants, Mendel performed a test cross by crossing an F1 tall plant (Tt) with a true-breeding short plant (tt). If the F1 tall plants were pure-breeding for tallness, all offspring in the F2 generation would be tall. However, if the F1 tall plants carried the recessive trait for shortness, a 1:1 ratio of tall to short plants would emerge in the F2 generation. Mendel observed approximately 25% short plants in the F2 generation, confirming that the F1 tall plants were not identical but heterozygous for the tall and short traits. This test cross provided crucial evidence for Mendel’s laws of inheritance.
See lessWhy would the experiment explained in Figure not work if progeny inherited a single whole gene set from each parent?
If progeny were to inherit a single whole gene set from each parent, the experiment depicted in the figure would fail to capture the essence of sexual reproduction. The fundamental advantage of sexual reproduction lies in the generation of genetically diverse offspring through the combination and shRead more
If progeny were to inherit a single whole gene set from each parent, the experiment depicted in the figure would fail to capture the essence of sexual reproduction. The fundamental advantage of sexual reproduction lies in the generation of genetically diverse offspring through the combination and shuffling of genetic material from both parents. This diversity provides a reservoir of potential traits, enhancing a population’s adaptability and evolutionary success. If each progeny received an entire gene set from a single parent, it would mimic a form of asexual reproduction, leading to genetically uniform offspring. Such uniformity hampers adaptability and limits the evolutionary potential of a population, as it lacks the genetic variation necessary for survival in changing environments.
See less