List at least five phenomena that can alter expected Mendelian phenotypic ratios in genetic crosses(Hint:chapter 5)

Consider the genetic map below. (a) In a total of 1000 observed progeny, how many would be expected to be parental, non-recombinant? (b) If the total number of observed double-crossover recombinant progeny is 0, what is the interference?    A-------20 cm-----B—5cm----C

Design a scheme for each possible outcome of the cross in figure and label the parental and and recombinant progeny.

please answer all parts

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.

Some mice are born with a yellow coat controlled by the gene Y. Examine the setup and outcome of the following crosses, which produce two generations: Po: yellow mouse X gray mouse F1 :5 yellow mice, 4 gray mice P: yellow mouse from F1 X yellow mouse from F1 F2 : 7 gray mice, 15 yellow mice with 9 dead Analyze the information provided to answer these questions: • What type of cross is the first cross? • Which trait is dominant? • What is the genotype of the yellow mouse in the first cross? • What is the genotype of the gray mouse in the second cross? Why are 9 mice dead in F2?

The data set attached summarizes F2 numbers from an F1 cross arising from two, true-breeding Drosophila strains (P generation), which differ with respect to two mutant traits. Here are the hypothesis: Leg length - The wild-type and mutant alleles for leg length are incomplete dominant relative to each other. Justification: The data set includes three phenotypic categories for leg length: wild type (long leg), medium leg, and truncated wings. The presence of three distinct phenotypes suggests an incomplete dominance pattern, where the heterozygous individuals exhibit an intermediate leg length phenotype (medium leg). The absence of purebred short-legged individuals supports the idea that the long leg allele is dominant over the short leg allele. This shows that mode of inheritance is incomplete dominance of the alleles relative to each other. Since the data does not mention any specific differences between males and females, we can assume that the mode of inheritance for the trait is…

#1b) An allele for coat color in mice, Y, produces a yellow coat color when present. The phenotypes of the F1 generation are shown. A cross between a Non-yellow mouse and yellow mouse produces half yellow and half non-yellow progeny (offsprings). Non-yellow happens to be white in this example, but it does not need to be; it can be black, grey, or some other mouse color. How does the F1 generation ratio differ from the expected mendelian ratios for a heterozygous, hybrid cross? * Yellow Non-yellow Pgeneration Yellow Yellow Meiosis Gametes 1/2 1/2 Fertilization Yellow Non-yellow F generation Non vellow Yellow Yellow Dead Support | Schoology Blog | PRIVACY POLICY | Terms of Use

The answer is "D" but can you explain in a short summary why D is the answer please

Consider a cross between a true breeding purple flowered pea plant (genotype PP) and a true breeding white flowered pea plant (genotype pp) that produces all heterozygous F1 offspring. An F1 intercross is conducted between two of the F1 offspring, resulting in the F2 generation. What is the expected genotpye outcome of the F2 individuals resulting from the F1 intercross? 1PP: 2Pp: 1pp 1PP: 1Рp: 1pp 100% Pp 1PP: 1pp 100% pp