The Dlx gene encodes a transcription factor that signals clusters of embryonic cells to ____ and gives rise to an appendage.
A. fold into the cardiac muscle
B. protrude from the body
C. form reproductive structures
D. induce apoptosis in cells lining the appendages
E. develop into the immune system
Answer: B
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A symbiotic relationship where one organism lives inside another species is called _______
A. cytoplasmic inheritance B. heteroplasmy C. paternal leakage D. endosymbiosis
Hormones are distributed throughout the body by the
__________ system. a. exocrine b. lymphatic c. nervous d. circulatory e. integumentary
Describe where in the process of meiosis independent assortment of genes occurs
What will be an ideal response?
Studying the changes in densities of pocket gophers when large herbivores such as elk are excluded from mountain forests would be an example of studying ecology at which level?
A) population B) ecosystem C) community D) biosphere