All of the genes on a single chromosome are

a) a linkage group.
b) a linkage map.
c) homologous.
d) a locus.
e) an allele.


Answer: a) a linkage group.

Biology & Microbiology

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Interpret the results to the following experiment

Transcriptional activity of chemotactic genes showed a high expression level during the following conditions: repelling away from compound 1, moving towards compound 2, and remaining sessile when presented compounds 3 and 4. A) Activity during movement in any direction led to high measurements observed, and the sessile population responded equally to both a chemoattractant and a chemorepellant but remained in the same location for their net movement. B) Gene expression by itself cannot distinguish between cells responding to both an attractant and repellent, so this ambiguity makes transcriptomics unfavorable but nonetheless indicates activity. C) The activity observed during a sessile existence suggests the molecular probe was targeting a chemotactic gene that is also involved in other non-chemotactic functions due to the activity observed. D) Transcriptomics as a whole cannot be used for chemotaxis genes because they are not regulated at the transcriptional level (i.e., they are constitutive), which is why activity is observed on all three conditions.

Biology & Microbiology

Grizzly bears have large geographic ranges that consist of mosaics of forests and grasslands at varying altitudes. Grizzlies also require relatively pristine water sources in their range. Based on this, what species type best describes grizzly bears?

A. flagship species. B. endemic species. C. indicator species. D. keystone species. E. umbrella species.

Biology & Microbiology

The queen in a naked mole rat colony is the only female allowed to breed

Indicate whether the statement is true or false

Biology & Microbiology

Pollution taxes often take the form of ________.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology