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Q1. In peaches, homozygous condition GoGo produces oval glands at the base of the leaves, the heterozygous genotype GoGa produces round glands, and the homozygous condition GaGa results in an absence of glands. At another locus, a dominant allele S produces fuzzy peach skin and its recessive allele s produces smooth (nectarine) skin. An oval gland nectarine is crossed to a homozygous variety having fuzzy skin lacking glands at the base of its leaves. What genotypic and phenotypic proportions are expected in F2?
Q2. Six platyfish with dissimilar tail spotting patterns live in eastern Mexico. Five of them can interbreed and produce fertile offspring. One of them cannot interbreed with the other five. What can you conclude about these platyfish?
What specific property of DNA structure facilitates the replication (copying) of a DNA molecule?
Sketch another graph showing the response to selection if the heritability, h2, of pesticide resistance is 0.8. Illustrate an experiment that you could use to measure how this population of beetles responds to the selection that occurs when the popul..
Explain why conditions that cause destruction of B lymphocytes and/or T lymphocytes cause malfunctioning of both the specific and nonspecific immune responses.
Chlamydias and rekettsias were once classified as viruses because of their small size and obligate intracellular growth requirement. What are some of techniques can be used to illustrate that they are really bacteria.
Why is it important to first determine whether growth occurred in a different medium, such as starch agar before examining the plates?
Which statements describe the structure of the pyruvate dehydrogenase (PDH) complex? (could be more than one)
what kinds of matings would produce only palominos
The female I-1 and her mate, male I-2, had four children, one of whom has albinism. What is the probability that they could have had a total of four children
What two groups of organisms live symbiotically to form lichens? Of what benefit are mycorrhizal fungi to plants? How does this symbiotic relationship benefit the fungus.
List and explain at least three cellular features of bacteria that might be targeted to inhibit or kill a bacterial pathogen.
Microevolution is defined as a change inallele frequencies in a population over generations. Please explainwhat an allele is, in genetic terms. Name the three major factorsinvolved in allele frequency changes in populations.
Explain the process of skeletal muscle contraction, starting from the efferent motor neuron's action potential, and ending with the relaxation of the muscle.
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