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.
What does it mean that pea plants are 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.
What does true-breeding in pea plants mean quizlet?
Solution. Verified. True-breeding is a process of plant breeding where there is only one parent, which means that an offspring will have the same appearance as the parental generation.
Are peas true-breeding?
Peas had been shown to be true-breeding (all offspring will have the same characteristic generation after generation). Peas exhibit a variety of contrasting traits (purple vs. white flowers; round vs. wrinkled seeds).
When a pea plant is true-breeding for a trait quizlet?
Mendel established true-breeding pea plants for certain traits before undertaking his experiments. The term “true-breeding refers to: CH. 11 – A true-breeding plant is one that, when self-fertilized, only produces offspring with the same traits.
What is the meaning of true breeding?
A true-breeding organism, sometimes also called a purebred (biology slang: pure line or true-breeding line), is an organism that always passes down certain phenotypic traits (i.e. physically expressed traits) to its offspring of many generations.
How can you tell a true breeding plant?
With plants, true breeding occurs when plants produce only offspring of the same variety when they self-pollinate. For instance, a plant that has blue flowers will produce only seeds that will grow into plants that have blue flowers. With true breeding, the trait is passed on to all subsequent generations.
What does true-breeding mean in genetics problems quizlet?
True breeding. A true breeding organism, sometimes also called a pure-bred, is an organism that always passes down a certain phenotypic trait to its offspring.
When a true-breeding plant with yellow peas was crossed to a true-breeding plant with green peas What results did Mendel observe?
Gregor Mendel crossed true-breeding plants with green pea pods with true-breeding plants with yellow pea pods. The resulting F1 generation all had green pea pods. What did he observe in the F2 generation? Mendel observed green and yellow pea pods in a 3:1 ratio because the F1 generation was heterozygous.
When Mendel crossed true-breeding tall and short parental plants what was produced quizlet?
Terms in this set (20) When Gregor Mendel crossed true-breeding tall plants with true-breeding short plants, why was it impossible to observe segregation? true-breeding plants that produced axial flowers were crossed with true-breeding plants that produced terminal flowers.
Why did Mendel use true breeding pea plants?
True-breeding pea plants were important to Mendel’s experiments because the true-breeding pea plants acted as the control group, meaning that Mendel used the true-breeding pea plants to compare the results of his cross-breeding pea plants. Without them, he would have nothing to compare his genetic variations to.
When a true breeding pea plant that has yellow seeds is pollinated?
So, the correct answer is “Dominant“.
What was Mendel’s experiment with pea plants?
Mendel crossed pure lines of pea plants. Dominant traits, like purple flower colour, appeared in the first-generation hybrids (F1), whereas recessive traits, like white flower colour, were masked. However, recessive traits reappeared in second-generation (F2) pea plants in a ratio of 3:1 (dominant to recessive).
Why was the pea plant ideal for Mendel quizlet?
Terms in this set (13) Why was the pea plant an ideal plant for Mendel to use? It has characteristics for which the phenotypes are easy to differentiate. Mendel determined that for a given character, such as pea seed shape, an individual has two factors and that these can exist in 2 forms (R or r).
When a true breeding yellow seeded pea plant is crossed with a true breeding green seeded pea plant the F1 offspring all have which genotype?
Seed color is governed by a single gene with two alleles. The yellow-seed allele is dominant and the green-seed allele is recessive. When true-breeding plants were cross-fertilized, in which one parent had yellow seeds and one had green seeds, all of the F1 hybrid offspring had yellow seeds.
When did Mendel crossed true?
In his crosses of true-breeding lines of peas that differed in flower color (purple versus white), Mendel observed that all F1 hybrid offspring had the same color (purple). The phenotype of the F1 hybrids revealed that one color (and the allele for that color) was completely dominant to the other color (and allele).
Is true breeding the same as pure breeding?
A true breeding organism, sometimes also called a pure-bred, is an organism having certain biological traits which are passed on to all subsequent generations when bred with another true breeding organism for the same traits.
What is mean by true breeding or pure breeding line strain?
Solution : A true breeding (pure breeding strain ) means it has undergone continuous self pollination having stable train inheritance from parent to offspring. Mating within pure breeding lines product offsprings having specific parental traits that are constant in inheritance and experience for many generations.
How is a hybrid plant different from a true breeding plant?
how is a “hybrid” plant different from a “true-breeding” plant? a cross between two plants that are true breeding, except the parent genders are switched.
What is a true breeding genotype?
True bred organisms will have a pure genotype (genetic expression of a trait) and will only produce a certain phenotype. True bred is sometimes also called pure bred. If you take two true breeding pea plants – say, one that is yellow and one that is green – and cross them, you would end up with only yellow offspring.
Is true breeding always homozygous?
True-breeding organisms are genetically identical and have identical alleles for specified traits. The alleles for these type of organisms are homozygous. True-breeding plants and organisms may express phenotypes that are either homozygous dominant or homozygous recessive.