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Use the following table with simulated data for days to pollen shed for 3 inbred lines of maize in order to estimate the genetic variance (Vg). Equation Long Description V equals one divided by n, multiplied by the sum over i of the quantity x sub i minus X bar, all squared Performance of inbred lines across environments Inbred lines A B C Mean Environment 1 42 44 46 44 Environment 2 44 46 48 46 Environment 3 46 48 50 48 Mean 44 46 48 46   Select the right answer and show your work on your scratch paper for credit.  

We want to map the distance between genes A (green color), B (rough leaf), and C (normal fertility). Each gene has a recessive allele (a= yellow, b=glossy and c=variable).Results from the mating are as follow:  Phenotype combinations and counts Combination Combination 1) Green, rough, normal: 85 5) Green, glossy, normal: 600 2) Yellow, rough, normal: 45 6) Yellow, glossy, normal: 5 3) Green, rough, variable: 4 7) Green, glossy, variable: 50 4) Yellow, rough, variable: 600 8) Yellow, glossy, variable: 90   The double crossover progeny can be observed in the phenotype #s 3 (green, rough, variable) with its corresponding genotype [genotype1] and 6 (yellow, glossy, normal) with its corresponding genotype [genotype2]. Based on the information from the table and the previous question, the gene in the middle is [middle].

The genetic profile of the embryos in a population is indicated in the table below. Following natural selection, the deleterious phenotype disappears and only a portion of the population reaches adulthood. Think about the values needed to complete the table, this will help you find the values needed for this question and the following two. Embryo genotype counts, frequencies, and fitness Embryos AA Aa aa Total Number 100 200 100 400 Frequency 1 Fitness 1 0.50 0 Natural selection occurs Adult genotype counts after natural selection Adult AA Aa aa Total Number   What is the frequency of allele A in the reproductive adults? Select the right answer and show your work on your scratch paper for credit.

When the following equation is balanced, what is the coefficient in front of the Pb(NO3)2?Pb(NO3)2 → PbO + NO2 + O2

What is the pH of a solution that is 1,000 times as acidic as one with a pH of 7?

Which of the following reactions is a single displacement reaction?

What type of compound, based on the bonding between elements, is Al2O3?

What is the chemical name for the compound N2O4?

Referring only to a periodic table, give the correct valence for the element Br:

When mainly nitrogen and oxygen are mixed to form air, what kind of mixture is this?