If an organism has two non-identical versions of a gene, the one that is not expressed in the organism is called the __________
Fill in the blank(s) with the appropriate word(s)
Answer: Recessive allele.
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Which region(s) of the ribosome accept(s) charged tRNA molecules during the elongation phase of translation?
a. the A site b. the A site or the E site c. the P site d. the P site or the E site e. the E site
Drosophila melanogaster, the fruit fly, has a 2n chromosome number of 8. Assume that you are microscopically examining the mitotic and meiotic cells of this organism
You note that in the female, two chromosomal pairs are metacentric and two pairs are acrocentric. (a) Draw the chromosomal configurations as you would expect to see them at the stages listed: mitotic metaphase first polar body (metaphase) primary oocyte (metaphase) ootid (G1) secondary oocyte (metaphase) (b) Given that the previously mentioned cells are from individuals heterozygous for two independently segregating, autosomal loci, plum eyes and curled wings, place appropriate symbols (of your designation) on chromosomes in the drawings you made for part (a). Assume no crossing over, and there may be more than one correct answer in some cases. (c) Assuming that a somatic G2 nucleus from the individuals mentioned above contains about 8.0 picograms of DNA, how much nuclear DNA would you expect in each of the cells mentioned in part (a)?
Cancer cells exhibit a variety of differences from normal cells in cell adhesion, cell junctions, and cell effects on the extracellular matrix, some of which facilitate metastasis
Explain three changes found in some cancer cells related to these aspects of cell structure and function. What will be an ideal response?
The function of ribosomes is to make _______.
Fill in the blank(s) with the appropriate word(s).