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

Biology & Microbiology

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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

Biology & Microbiology

__________ are heterotrophs that grow as a mesh of

absorptive filaments. Some are plant pathogens. Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

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.

Biology & Microbiology

The Gram-staining procedure is an example of ________.

A. simple staining B. fluorescent staining C. differential staining D. negative staining

Biology & Microbiology