Coefficient of Coincidence / Interference

F1 females from a cross of AABBCC to aabbcc were backcrossed to aabbcc males. IN the progeny of this cross there were 150 AaBbCc, 145 aabbcc, 55aabbCc, 52 AaBbcc, 31 aaBbcc, 29 AabbCc, 5 Aabbcc and 3 aaBbCc. Is there evidence of interference? What is the coefficient of coincidence?

Genetic Mitosis & Meiosis

1) According to the Law of Segregation, in an organism with the genotype AaBb what types of gametes will be formed? AB Ab aB ab 2) In garden peas, the allele for tall plants is dominant over the allele for short plants. A true-breeding tall plant is crossed with a short plant and one of their offspring is self-pollinated. Out of 20 offspring resulting from the self-pollination, about ________ should be tall. TT x tt= Tt x Tt= TT Tt Tt tt ¾=15 4) Martians normally have three eyes (E), but the rare "humanoid" mutation (e) causes monsters with two eyes to be born. Eye color in Martians is inherited similarly to humans, with brown eyes (B) being dominant to blue ... click for more

Mendelian problems

1. A short-tailed mutant of mouse was discovered. Multiple crosses of this mouse to normal mice produced 27 normal, long-talied mice and 25 short-tailed mice. A series of crosses among short tailed mice were made and 21 short-tailed mice and 11 long-tailed mice were produced. Determine which phenotype is dominant and explain the ratios observed with regards to the genotypes of the parents in each cross. 2. You hypothesized that snapdragon flower color is controlled in an incomplete dominant manner. You created an F1 population by crossing red and white parents and selfed the F1 plants and obtained the following ratio: 31 red, 66 pink, and 27 white flowered plants. Suggest a hypothe... click for more

Breeding rabbits using a cross and key to support answer

If a rabbit breeder crossed a pure-bred white normal-coated male with a pure-bred black Havana female with satin coat and all the offspring were Havana black with normal coats. Then he crossed two of the Havana blacks with normal coats in hopes of obtaining a satin black Havana rabbit. What would be the likelihood of this being successful? I need to show the cross and key to explain my answer.

Expected phenotypic ratios

I need to be able to list the work and list the expected phenotypic ratios for the following crosses: A. If a red cow is bred with a white bull, all offspring are roan, which have red and white hairs intermixed on the hide. I know this is an example of co-dominance, but what are the results of roan x roan? B. If solid x spotted = all solid, what will two heterozygous solids produce? C. heterozygous solid x spotted = D. AaBb x Aabb= E. AaBb x aabb=