Why does a sporophyte-dominant stage allow for greater diversity?
What will be an ideal response?
In the sporophyte stage, the cells are diploid; effects of a deleterious mutant allele can be masked, allowing the plant to survive when a haploid plant would be subject to selection. A longer sporophyte stage also allows for greater genetic diversity, which facilitates adaptive radiation into diverse habitats.
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Which kind of sterilization procedure takes advantage of the size of microorganisms?
A. Open flame B. Use of chemicals C. Filtration D. Autoclaving
We have a family of genes that code for different forms of myosin. How could this family of genes have arisen?
A. There is duplication of the original myosin gene, and the resulting copies have diverged. B. Two different original genes accumulated mutations and converged on myosin. C. There is duplication of the original myosin gene without divergence. D. Lateral gene transfer from a bacterium occurs as a result of infection.
The consensus coding sequence of homeotic genes is called a _______
A. TATA box B. Pribnow box C. homeobox D. parasegment
A researcher observed a reduction in the number of chromosomes during cell division for a microbe, he concludes that the microbe must be
A. Eukaryotic B. Prokaryotic C. An archaean D. a virus Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about cell replication? How does it relate to the question? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?