You decide to analyze the inheritance of one more trait: the number of leaves per plant. You cross together two pure lines: one line with individuals growing one leaf per plant, and another line with five leaves per plant. All of the F1 progeny show five leaves per plant. You self-cross all of these F1 plants. The resulting F2 plants grow one, or five, leaves in the following numbers: 26 plants with one leaf & 77 plants with five leaves. Which one of the following options most accurately describes the likely genotype of the plants with one leaf? These plants are likely homozygous for the recessive allele for the leaf number gene. These plants are likely homozygous for the dominant allele for the leaf number gene. These plants are likely heterozygous for the leaf number gene. These plants are likely homozygous dominant or heterozygous for the leaf number gene. None of the above

Imagine that Mendel intended to conduct a monohybrid cross with a purple- flowering pea plant and a white-flowering pea plant, but he observed that in the F1 generation, 50% of the plants are purple-flowering and 50% are white-flowering. Where did Mendel go wrong with his intended experiment and how can you tell?

The weight of the fruit of a certain kind of melon is determined by 2 genes, each with 2 alleles. The genotype AABB produces melons weighing 4 pounds each, while the genotype aabb produces melons weighing 2 pounds each. Each dominant allele adds 0.5 pound to a melon’s weight. When a plant producing 4-pound melons was crossed with another plant producing 2-pound melons, all of their F1 offspring produced melons weighing 3 pounds

You cross pure breeding plants with short stamens and white flowers to plants (also purebreeding) with long stamens and blue flowers. All the F1 have white flowers and long stamens. You cross the F1 to another strain of plants, pure breeding for blue flowers and short stamens. The F2 progeny are: 12 White and Long, 85 White and short, 8 Blue and short, 95 blue and long. What is the distance between the two genes? 10 mu 90 mu 1 mu 20 mu They are not linked

MENDEL CROSSED TRUE BREEDING PEA PLANTS. ONE PARENT HAD ROUND, GREEN SEEDS, AND THE OTHER HAD WRINKLED, YELLOW SEED. ALL F₁ PLANTS HAD SEEDS THAT WERE ROUND AND YELLOW. PREDICT THE RESULTS OF F₂ PLANTS, USING A PUNNET SQUARE OR TREE DIAGRAM. 1 2 WHAT ARE THE RESULTS AS A RATIO? WHAT ARE THE RESULTS AS FRACTIONS?

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?

Choose one pls

*Ms. Libby Davison bought three Congo Lily bulbs at a flower show after she was told they were each from different inbred lines. One had red flowers, on yellow flowers, and one white flowers. She determined that flower color was controlled by three alleles at a single gene. Red was found to be codominant with yellow, and both alleles dominant to white. Some of the crosses she made and the resulting progeny are listed below: Progeny All red Cross Red (selfed) Yellow (selfed) White (selfed) Red x yellow Yellow x white Red x white Orange (selfed) 1 red: 2 orange: 1 yellow a. Designate each allele with an appropriate gene symbol. All yellow All white All orange All yellow All red b. Identify all possible genotypes of the following phenotypes i. Red ii. Yellow Taken from Introduction to genetic analysis 7 edition. 1999. Griffiths et al. Chapter 4. iii. White iv. Orange c. Determine the expected phenotypes and their ratios in the progeny from each of the following crosses. i. Orange x white…

In rabbits, black hair is due to a dominant allele B and brown hair to its recessive allele b.  Short hair (H) is dominant to long hair (h).  In a cross between a homozygous black, longhaired rabbit and a brown, homozygous shorthaired one, what would the F1 generation look like?  If you did not know the genotype of an F1 rabbit, you could determine its genotype by a test cross in which it is crossed with an animal with which phenotype AND genotype If you carried out this test cross, what phenotypes and in what ratio would you expect? What phenotypes in what ratio would be expected in the F2 generation?