Why did Mendel self-pollinate the tall F1 plants to get the F2 generation and crossed a pure breeding tall plant with a pure breeding dwarf plant to obtain the F1 generation?

Imagine you are given two tall plants, but you do not know their genotype (see Figure 16-12). There are three possibilities—they might both be TT or both Tt or one TT and the other Tt. Imagine you cross the two plants, wait for them to produce seeds, and then plant the seeds. If all resulting plants are tall, can you then determine what the genotypes of the two parents are? If approximately half the resulting plants are tall and about half are short, can you then figure out the genotypes of the parents?

In snapdragons, red flower color is incompletely dominant to white flower color. Tall is completely dominant to short. You cross a true breeding red-flowered tall plant to a true breeding white-flowered short plant. You cross the F1 offspring to each other. In the F2, what is the probability of offspring that are white-flowered and tall?

The diagram shows a plant that is heterozygous for two genes. G = yellow; g = green; R = round; r = wrinkled G Four different types of gametes are produced by a heterozygous individual when crossing over occurs, and two different types of gametes are produced when crossing over does not occur. What does this information reveal about crossng over? O Crossing over introduces variety by producing different combinations of alleles. O Crossing over reduces the incidence of DNA and chromosomal mutations. O Crossing over introduces variety in by creating types of genes. O Crossing over maintains the count of genes and the original alleles in both chromosomes. Copyright ©2021 Certica Solutions, Inc. https://encase.te21.com/Assessment/View/fc425cee-df10-4f28-a988-c3calbfa788a/675fd7db-03b1-48af-af8e-f6be62227cd7#

Show the cross between a heterozygous purple flowered pea plant and a white flowered pea plant. What is the genotypic ratio of the above cross? What is the phenotypic ratio of the above cross?

If you crossed an F1 plant with a plant that was homozygous recessive for both genes (yyrr),how would the phenotypic ratio of the offspring compare with the 9:3:3:1 ratio seen here?