Studies have indicated a genetic link between a chromosome abnormality and acute myeloid leukemia, a deadly cancer affecting white blood cell production. Many sufferers of the cancer also possess monosomy 7, which is passed along generations in their families and also corresponds with the incidence of cancer in its members. What would you notice on a karyotype taken from a family with a trend of genetic-linked acute myeloid leukemia?
A. Only one copy each of the 7th and the 21st chromosome
B. Three copies of each chromosome
C. Only one copy of the 7th chromosome
D. Seven copies of each chromosome
Answer: C
You might also like to view...
For relaxation to occur,
A. calcium leaves the sarcoplasmic reticulum, and troponin binds calcium and blocks the binding sites on actin. B. calcium enters the myofibril, it detaches from myosin, and the binding sites on myosin become inactive. C. sarcoplasm calcium levels fall, calcium is removed from troponin, and tropomyosin blocks binding sites on actin. D. extracellular calcium levels fall, calcium is pumped into the myofibril, and tropomyosin slides away from actin.
The area that connects the cell body to the axon is called the
A) Nissl body. B) neurofibril. C) axon hillock. D) axoplasm. E) initial segment.
The capillaries have an overall, tremendous cross-sectional area with a relatively fast flow rate
Indicate whether the statement is true or false
Gastrin stimulates release of histamine via an action defined as:
A. neurocrine B. endocrine C. paracrine