A 2n cell from an organism has 40 chromosomes. How many chromosomes would be in a haploid gamete from this organism?
A) 46 B) 20 C) 40 D) 10 E) 80
Answer: B
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You have a plant that naturally exhibits simple leaves, but you would like to change the shape of the leaves from simple to compound. What gene could you over-express in your plant to induce compound leaf formation?
A) Bicoid B) MONOPTEROS C) PHANTASTICA D) Cytoplasmic deteminants E) Sonic Hedgehog
__________ are heterotrophs that grow as a mesh of
absorptive filaments. Some are plant pathogens. Fill in the blank(s) with the appropriate word(s).
Gonadotropin-releasing hormone (GnRH)
A) is made by the ovaries. B) causes endometrial cells to multiply. C) is produced by the pituitary. D) is secreted when there is a high level of progesterone in the blood. E) stimulates the release of FSH and LH.
The Gram-staining procedure is an example of ________.
A. simple staining B. fluorescent staining C. differential staining D. negative staining