Why is color-blindness more common in males than in females?
a. Because females would have to receive one copy of the recessive color blindness gene to
actually express the trait.
b. Because a male only needs to receive the recessive gene from his mother to be color-blind.
c. Because color-blindness is an Y-linked trait.
d. Females are hemizygous
e. Males are never hemizygous
B
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Science is subdivided into specific areas of study termed disciplines. These divisions are artificial but are helpful to narrow the massive scope of scientific knowledge to a manageable amount. Given what you know about each, which scientific division is likely to present the best answer to a question about how fluid dynamics affect blood pressure in mammals?
A. Bioinformatics – use of technology to study and store biological data B. Biochemistry – study of chemical reactions needed for life function, usually at the cellular level. C. Biology – study of life D. Biophysics – study of biological processes through physics
You insert a fragment of sheep DNA into a plasmid containing an AmpR gene. You transform bacteria with the recombinant plasmid, and plate the cells on growth media containing the antibiotic ampicillin. Each colony on the plate arose from _____ that ____ to ampicillin.
A. a single bacterium; is sensitive. B. many bacteria; are sensitive. C. many bacteria; are resistant. D. a single bacterium; is resistant.
Touching your chin to your chest is an example of ____________________. Fill in the blank(s) with the appropriate word(s)
In positive control regulation, the activator protein binds to the ________ site to induce transcription
a. activator-binding b. operator c. promoter d. repressor