Genetics question

1. In peas, the chemical pisatin is associated with defense against parasitic fungi: normal plants are resistant to fungi and contain pisatin. Two pure lines were obtained, both of which lacked pisatin and were highly susceptible to fungal attack Line 1 was from California and line 2 was from Sweden. The lines were investigated as follows. (Note that the normal lines were also pure breeding.) (see attachment for chart) a. Propose a model that explains the results of these crosses. Make sure that you precisely define any symbols that you use. b. Show the genotypes underlying the parents, F1, and F2 in each cross c. How do lines 1 and 2 differ with respect to the genetic cause of their... click for more

DNA

Why a defendant's genes should be considered as a factor in the criminal behavior. Why a defendant's genes do not excuse criminal behaivor.

New phenotypes

1. One form of color blindness in humans is caused by a sex-linked recessive mutant gene (c). A woman with normal color vision (c+) and whose father was also color-blind marries a man of normal vision whose father was also color-blind. What proportion of their offspring will be color-blind? (Give your answer separately for males and females) 8. (6 points) Two drosophila flies that had normal (transparent, long) wings were mated. In the progeny, two new phenotypes appeared, dusky wings and dipped wings. The progeny were as follows: Females 179 transparent, long 58 transparent, clipped Males 92 transparent, long 89 dusky, long 28 transparent, clipped 31 dusky... click for more

Using DNA to consider as a factor in the criminal behavior

Using DNA as a starting point, do you believe there are limits to the knowledge people should acquire? Defend your answer based on the following: 1. Present an argument about why a defendant's genes should be considered as factor in the criminal behavior.

Four basic genetics problems

Practice problems 1. You're working in a lab that studies a particularly gruesome parasite from the Amazon that infests people's ear canals while they sleep. This parasite has a diploid number of 12 chromosomes in its somatic cells, consisting of 6 homologous pairs (i.e. 6 maternal and 6 paternal chromosomes). Another student in your lab tells you that only one-fourth of the gametes produced by meiosis in this parasite will have all of it's chromosomes from either maternal or paternal origin (i.e. all the chromosomes from dad or all the chromosomes from mom). Assume that meiosis in this parasite works just like meiosis in organisms we've talked about in class and explain whether you t... click for more