You do an experiment with the genetics of plant flower color. You cross a red flowered plant with a yellow flowered plant. The F1 progeny from the hundreds of seeds produced include plants that had red flowers and others with yellow flowers but there are also many plants whose flowers were a wide variety of shades of orange in-between the two extremes (that is not just one color halfway between the parents). What kind of non-Mendelian inheritance can lead to this type of result? Explain.

. In corn, three dominant alleles, called A, C, and R,must be present to produce colored seeds. GenotypeA/− ; C/− ; R/− is colored; all others are colorless.A colored plant is crossed with three tester plants ofknown genotype. With tester a/a ; c/c ; R/R, the coloredplant produces 50 percent colored seeds; with a/a ;C/C ; r/r, it produces 25 percent colored; and withA/A ; c/c ; r/r, it produces 50 percent colored. What isthe genotype of the colored plant?

Outline the basic hybridization research done by Mendel when crossing a true breading violet flowered plant with a true breeding white flowered plant? In your answer you should indicate the parental generation, the F1, and the F2 results.

This exercise is designed to give you some practice with Punnett squares and Mendel's principals of inheritance. Melanin is a chemical pigment produced in our body that contributes greatly to our skin, eye, and hair pigmentation -it also relates to color of fur, feathers, and such in animals. In general, the more melanin that is produced, the darker the color. A few genes contribute to the type and amount of melanin that is produced. Most people produce melanin in their skin, because it helps protect against the damages caused by the sun. This is why people tan. There is, however, a particular set of recessive alleles that cause a person to produce little or no melanin, and we refer to this as albinism. An animal or person who has little or no melanin is referred to as albino, and this can manifest in hair, skin, and eyes. For humans, this can be a rather dangerous condition as albinos are far more susceptible to sun damage, particularly cancer. In this exercise, the alleles are as…

Mendel crossed Parental true-breeding (homozygous) Purple flowered peas with true-breeding (homozygous) White flowered peas, and all the F1 offspring were Purple flowered. What was the phenotype and genotype of the F1 hybrids? 3/4 purple, PP: 1/4white pp .1/2purple. PP 1/2 whitce pp purple. PA purple Pp 近

Choose one pls

Mendel also studied tall and short varieties of pea plants. When he crossed tall x short plants together, the F1were tall. The tall F1 plants were self-hybridized to produce the F2. What proportion of phenotypes would be expected in the F2? 1:2:1 tall:intermediate:short 3:1 tall:short 1:1 tall:short 3:1 short:tall 1:2:1 intermediate:tall:short

Pigeons display a high color variety, here we try to understand the genetic basis of mixed red & black stippling of the feathers (kitey) and their genetic relation to black and red feather color. We conducted the following crosses: Cross Offspring kitey x kitey 16 kitey 5 black 3 red kitey x black 6 kitey 7 black red x kitey 18 red 9 kitey 6 black   Have a look at the cross results and develop a hypothesis to explain the inheritance of kitey, black and red feather color in pigeons (Hint: assume that 2 loci are involved and some type of epistasis occurs) QUESTION: 1. provide hypothesis                     2.  provide the hypothetical genotypes for each crossing

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?