Crossing over is important for ________.

increasing genetic variability
preventing mutations
limiting genetic recombination
maintaining chromosome structure


increasing genetic variability

Anatomy & Physiology

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The sternal angle can be used as an anatomical landmark to identify the position of the

A. jugular vein. B. trachea. C. hyoid bone. D. apex of the heart. E. second rib.

Anatomy & Physiology

Which of the following form the inner layer of the glomerular capsule and wrap around the capillaries of the glomerulus?

A. Mesangial cells B. Monocytes C. Nephrocytes D. Podocytes E. Macula densa cells

Anatomy & Physiology

The kidneys play a major role in the regulation of which of the following? select all that apply.

a) electrolytes b) cholesterol levels c) acid-base balance d) body temperature

Anatomy & Physiology

In the fast block to polyspermy, binding of sperm opens up ________ channels, which depolarizes the egg membrane and prevents the entrance of any more sperm.

A. K+ B. Ca2+ C. Mg2+ D. Na+ E. Cl-

Anatomy & Physiology