Which of the following conclusions was a results of Mendel's observations?
A.) Organisms that give rise to purebreds are genetically superior.
B.) Organisms that have intermediate feature are self-pollinating.
C.) Organisms inherit two copies of each gene, one from each parent.
D.) Organisms that self-pollinate do not have "either-or" features.
Answer: C.) Organisms inherit two copies of each gene, one from each parent.
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Which of these statements is false regarding kidney
stones? a. They may become lodged inside a ureter or the urethra. b. They may block urine flow. c. A high carbohydrate diet increases the risk for their formation. d. They may cause extreme pain. e. They may lead to permanent kidney damage.
Menstruation ________
A) involves the breakdown of the endometrium B) is stimulated by HCG C) occurs after ovulation but prior to degeneration of the follicle D) is triggered by an LH surge
What is the main difference between leukemias and lymphomas?
A) In leukemias, malignant cells are mainly located in the tissues. B) Lymphomas are present mainly in peripheral blood. C) Lymphomas arise due to a lack of response to stimulating antigens. D) Lymphomas arise mainly in lymph nodes, the spleen, or other lymphoid tissue.
Which of the following statements regarding the hepatitis D virus (HDV) is MOST correct?
A) The typical incubation period for HDV infection ranges from 180 to 360 days. B) The most common route of transmission of HDV is through sexual contact. C) Infection with HDV requires the host to be infected with the hepatitis B virus. D) If a documented exposure occurs, testing begins with the person who was exposed.