How would a large chromosomal inversion affect the expression of a gene if the gene is located between the two break points but no breaks occur within the gene?
A. The inversion would probably have no effect on gene expression.
B. The gene would not be transcribed because it would be oriented in the wrong direction.
C. The gene would be transcribed in the 3' to 5' direction.
D. The gene would be transcribed normally but the mRNA would be translated in the 3' to 5' direction.
A. The inversion would probably have no effect on gene expression.
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If the probability of X occurring is 1 in 4, and the probability of Y occurring is 1 in 5, the probability
of both occurring is
a. (1/4)2 + (1/5)2 = (1/16) + (1/25) = (25/400) + (16/400) = 41/400. b. (1/4) + (1/5) = (5/20) + (4/20) = 9/20. c. (1/4)2(1/5)2 = (1/16)(1/25) = 1/400. d. (1/4)(1/5) = 1/20. e. (1/4 + 1/5)2 = (5/20 + 4/20)2 = (9/20)2 = 81/400.
FSH and LH are secreted by the:
a. hypothalamus b. ovaries c. anterior pituitary d. testes e. uterus
When referring to tumor-suppressor genes and cancer, loss of heterozygosity is likely to suppress cancer formation
Indicate whether the statement is true or false
Early signs or symptoms of breast cancer include:
A) a small, painless lump in the breast. B) swollen lymph glands in the axilla. C) significant weight loss and vomiting. D) nipple discharge and breast tenderness.