Of the different sources of genetic variability which one produces the variation seen by the combination of any particular male gamete to any particular female gamete?
A) independent assortment
B) crossing over
C) random fertilization
D) mutation
C
You might also like to view...
All of the following are true of the thymus gland except that it
A) activates B cells. B) reaches its greatest relative size during the second year of life. C) involutes after puberty. D) produces T cells. E) lies in the anterior mediastinum.
Adrenal glands, pancreas, pituitary.
A) Respiratory B) Endocrine C) Digestive D) Cardiovascular E) Urinary
The two major types of phagocytic cells are
A. neutrophils and monocytes.
B. neutrophils and macrophages.
C. monocytes and macrophages.
D. lymphocytes and monocytes.
E. eosinophils and T cells.
Which of these hormones regulate calcium levels in the body?
A) T3 and T4 B) calcitonin and parathyroid hormone (PTH) C) oxytocin and prolactin D) insulin and glucagon E) melatonin and glucocorticoids