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A plant species X with n=5 chromosomes was crossed with a related species Y with n = 7 chromosomes. The F1 hybrids produced only a few pollen grains, which were used to fertilize the ovules of related species Z with n=7 chromosomes. A few plants were produced from this cross, and all had 19 chromosomes. The F1 hybrids (with 19 chromosomes) were mated with related species W with n=11 chromosomes. A few plants were produced from the cross and all had 30 chromosomes. Following self-fertilization of the F1 hybrids a few F2 plants were produced, each with 60 chromosomes. These plants were phenotypically different from either of the original species and were highly fertile.
a. Explain by diagram and description the events that produced these fertile F2 hybrids. You must be specific and very clear about what is happeningb. Give the karyotype of the gametes produced by the highly fertile F2 plants.c. Using appropriate genetic terminology, tell what type of plant ultimately arises as a result of the above crosses.
Is this organism recovered more frequently as a nosocomial pathogen, as a community-acquired pathogen, or at similar rates in both settings? Elucidate your choice.
A homozygous claret (ca=ruby eye color), curled (cu=upcurved wings), fluted (fl-creased wings) fruit fly is crossed to a pure-breeding wild-type fly. The F1 females are testcrossed with the following results.
A zookeeper hypothesizes that converting the intensity of the light in the primate exhibits will reduce the amount of aggression between the baboons.
In a random mating population, we have identified leghorn chickens that have an autosomal recessive disorder that results in the hopping like a bunny.
Describe how the clonal expansion theory explains the more rapid production of antigen specific antibodies, Helper T-cells and Cytotoxic T-cells, during a secondary infection.
For an amino acid such as alanine, the major species in solution at pH 7 is the zwitterionic form. Suppose a pKa value of 8 for the amino group and a pKa value of three for the carboxylic acid.
A plant cell is placed in a solution in a flask with a solute potential of -0.6MPa. When the cell and flask reach equilibrium, the cell's pressure is +0.5. At equilibrium, what is the solute potential of the cell?
The external environment is open directly to the peritoneal cavity of the abdomen and pelvis. This is one source of pelvic inflammatory disease.
Also glucose technically doesn't have a carbonyl functional group then because it is broken when the ring structure is formed? Is it a random chance that either alpha or beta glucose is formed.
which mode of action of an antiobiotic is least likely to cause side of effects in a ptient.
Illustrate the texture and arrangement of the lungs of the cat. If you were asked to create a karyotype from the chromosome spreads you made from HeLa cells, list materials you could use and describe how you would create the karyotype.
In an experiment, you purify a cysteine-charged tRNA and chemically alter the amino acid attached to it converting it to alanine.
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