What do true bred pea plants produce?
true-breeding plant: a plant that always produces offspring of the same phenotype when self-fertilized; one that is homozygous for the trait being followed.
How many factors control each trait in pea plants?
two factors
Mendel found that two factors—one from a sperm cell and one from an egg cell—control each trait. Dominant traits block the expression of recessive traits.
How many versions of each trait do pea plants have?
The seven characteristics that Mendel evaluated in his pea plants were each expressed as one of two versions, or traits. The physical expression of characteristics is accomplished through the expression of genes carried on chromosomes.
How many distinct characteristics are there in pea plants with true-breeding inheritance?
seven different features
By studying a model system, researchers can learn general principles that apply to other, harder-to-study organisms or biological systems, such as humans. Mendel studied the inheritance of seven different features in peas, including height, flower color, seed color, and seed shape.
How many species of pea plants are true breeding?
Since, mendel chose 14 varieties of true breeding pea plant, this is the correct option.
How many contrasting traits of pea were studied by Mendel?
After they have planted and grown five plants, Mendel asks students how many distinguishing traits they see in the plants. On the next screen, he reveals that there are seven different traits: Pea shape (round or wrinkled) Pea color (green or yellow)
What does it mean when pea plants are described as true breeding?
Mendel’s Crosses 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.
How did Mendel control pollination in 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.
What are the 8 pea plant traits and discuss each?
Plant & Cross
- 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)
How many chromosomes do pea plants have?
In part, this was the case because Mendel studied seven genes, and the pea plant has seven chromosomes.
How many genotypes are possible with 3 alleles?
six possible genotypes
Genotype is also used to refer to the pair of alleles present at a single locus. With alleles ‘A’ and ‘a’ there are three possible genotypes AA, Aa and aa. With three alleles 1, 2, 3 there are six possible genotypes: 11, 12, 13, 22, 23, 33. First we must appreciate that genes do not act in isolation.
How many true breeding pea plant varieties did Mendel select as pairs which were similar except in one?
14 true-breeding
Total 14 true-breeding pea plant varieties did Mendel select as pairs, which were similar except in one character with contrasting traits.