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Describe the environmental conditions that favored the evolution of gymnosperms. Describe the three additional adaptations to life on land that first appeared in gymnosperms.
Organize the genotype in the table, define the origin (parental, single cross-over progeny and double-crossover progeny) and find out the order of the genes on the chromosome.
Genes a and b are 20 cM apart. An a+b+/a+b+ individual was mated with an ab/ab individual. a.) diagram the cross and show the gametes produced by each parent and the genotype of the F1.
Assume i f you are performing in-situ hybridization to detect mRNA, why do you use the antisense strand? Are you using RNA or DNA as a probe for mRNA?
What is the phenotypic ratio you would expect to see in the F2 generation if you were following a sex-linked trait? An autosomal trait? Two autosomal dominant characters (dihybrid cross).
find the momentum of a charge (3.2e-19) that moves perpendicular to a uniform magnetic field B of magnitude 0.20T and has radius of curvature of 4.0cm. Momentum=mv
What chamber recieves deoxygenated blood from the body?
The result of mitosis is that daughter cells end up with similar number of chromosomes just as the parent cell.Explain how the results of mitosis differ between two processes of cell division?
What are the four major arthropod phyla living today? which one contains the insects,and which the spider,and which the centipedes?
In many countries, conservationists are trying to design national park systems so that "islands" of natural area (the big parks) are connected by thin "corridors" of undisturbed habitat. The idea is that this arrangement will allow animals and plants..
Gray seed color in peas is dominant to white. Assume that Mendel conducted a series of experiments where plants with gray seeds were crossed with each other and the following progeny were produced: 320 gray and 80 white.
Suppose the two tryptophan codons within the leader peptide of the trp operon were changed from tryptophan to asparagine. Predict if attenuation (premature termination of transcription) of the trp operon will occur if bacteria are grown on media c..
Discuss the differences you have noticed between old and new Food Pyramid. Provide your opinion if you believe new Food Pyramid will be successful in modifying the eating habits of Americans or not.
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