What are two organ systems that are not always found in animals?
What will be an ideal response?
Answer: skeletal and muscle
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A negative interference value indicates that the first crossover event enhanced the occurrence of additional crossover events in the region
Indicate whether the statement is true or false
There will be approximately ____ mice in four months in a population of 1,000 mice where 500 mice are born and 400 mice die monthly.
A. 1,000 B. 1,100 C. 1,200 D. 1,300 E. 1,400
What field of biology compares the development of organisms in order to better understand mechanisms of evolutionary change?
A. Cell biology. B. Evolutionary developmental biology. C. Punctuated equilibrium. D. Pattern formation. E. Endocrine biology.
A sodium ion (Na+) has a net charge of positive one; to become ionized, sodium must _____.
A) gain one positively charged proton B) gain one positively charged neutron C) lose one negatively charged electron D) gain one positively charged positron