Essays on Punnet

B. OBJECTIVE

C. METHODOLOGY Over a period of time of four week study three generations of flies starting with a parental (P) generation that has already separate the flies in each generation of each cross into males and females and separate the flies according to their mutations. Based on the observed numbers of each phenotype in each generation of each cross hypothesize the parental cross and use the chi-square (x2) test and if there is little difference between the observed results and the expected results, the chi-square will have a low value, thus, the hypothesis will be supported in this case. ...

Patterns of Inheritance

A homozygous brown mink was crossed with a silverblue mink. Brown (B) is dominant to silverblue. There were 9 offspring. What color were they? (B) Two of the offspring were mated. What would the ratio of brown to silverblue offspring be? What fraction of the offspring will be homozygous brown? Heterozygous? Homozygous recessive?

Let B represent the allele for brown color and b represent the allele for silver blue

Punnet square between homozygous brown mink and silver mink homozygous brown mink X Silver mink bb X BB

All the 9 offspring were brown

Mating two of the offspring Punnet square showing f1 generation will be as follows Bb X Bb Ratio of brown to silverblue is 3: 1 Fraction of homozygous ...

Virtual Lab Report

Virtual Lab 1: Virtual Microscopy A. Gauge the size of various biological components and organisms. The Virtual Microscope (copy and paste this address into a new browser window: http://learn.genetics.utah.edu/content/cells/scale/ ) can be used to make these observations. Estimate the size (length and width in microns) of An E.Coli cell is around 0.5µm in width and around 2µm in length. A mitochondrion is around 0.5µm in width and approximately 10µm in length. A Red blood cell is around 5.5µm in width and 7.5µm in length. A virus is approximately 0.25µm in width and ...