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Q. Bryophytes and fern allies were most prevalent during early plant evolution; however, many of these plants have been replaced by vascular plants. These "lower" plants possess flagellated sperm that have to swim through an aqueous medium to reach and fertilize eggs. From this information, in what kinds of habitat will you expect these plants to happen when they were abundant? On the other hand, vascular plants became dominant during the invasion of what type of habitat? What structures allowed them to infiltrate this new environment?
What will be the sex ratio in the offspring of a cross between a male that is heterozygous for lethal allele and a normal female.The classes of RNA molecules is linked with proteins.
You get a soil sample and run an enrichment culture on it. You give the organisms in the culture with all of the ingredients required for growth except for nitrogen. What result do you expect to have at the end of the experiment.
A middle-aged man comes in since he has noticed multiple small, blood-red, raised lesions over his anterior chest and abdomen for past numerous months. They are not painful and he has not known about any bleeding or bruising. He is concerned this mig..
In mid afternoon, they are on it's under surface, each caterpillar hanging by a few legs. Offer a hypothesis to explain this behaviour. How would you test it.
Diplomonads, such as Giardia contain two haploid nuclei per trophozoite. Thus, During the G1 phase of the cell cycle, there should be a total of how several unreplicated chromosomes per trophozoite, and throughout the G2 phase, how many replicated ch..
What genotypic and phenotypic proportions are expected in F2. 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. W..
Explain at least one historical extinction with parallels to the extinction threats facing the bog turtle. When allosteric effector X binds to enzyme #1, enzyme stops working. However, the speed of reaction can be altered by adjusting the concentrati..
Structure and based analysis of proteins
Describe the significance of historical achievements in proving the role of microorganisms in human health and disease and maintaining health of the environment. Be sure to explain the current classification of microorganisms.
Protein classification schemes
We are told that every surface we touch is teeming with bacterial cells, and bacteria are found in the pools we swim in, water we wash with, and on the hands of friends. Why don't we always have problems with bacterial infections all over our bodies.
What defence was successful in preventing you from grab the snake. While travelling in Texas, you stumble across a snake with red, yellow, and black bands.
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