________ is a type of neural tube defect in which part of the spinal cord develops abnormally, as does the adjacent area of the spine
Fill in the blank(s) with correct word
Spina bifida
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Mycorrhizae are especially effective in helping plant roots uptake
A. nitrogen. B. phosphorus. C. potassium. D. iron. E. magnesium.
According to the biological species concept, members of the same species look alike primarily because they ____
a. live in the same environment b. share the same gene pool c. have a common ancestor d. have stopped evolving e. are adapted to the same life style
A population of lizards lives in a rocky area next to a desert. Some lizards are light colored and blend into the sand. Others are dark and blend into the rocks. What is likely to happen to this population of lizards over time?
A. They may remain one species as a result of stabilizing selection. B. They may remain one species as a result of directional selection. C. They may remain one species as a result of disruptive selection. D. They may evolve into two separate species as a result of disruptive selection. E. They may evolve into two separate species as a result of directional selection.
The stages of the cell cycle that includes growth, DNA doubling, and when the nucleus is not actively dividing, are collectively called
Fill in the blank(s) with the appropriate word(s).