Answer the following statements true (T) or false (F)
1. Sexually transmitted infections are the most important cause of reproductive disorders.
2. The smaller cell produced by oogenesis meiosis I, called the first polar body, is essentially a packet of discarded nuclear material.
3. A human egg or sperm contains 23 pairs of chromosomes.
4. The Pap smear is a test to detect cancerous changes in cells of the cervix.
5. The adenohypophyseal hormone that triggers ovulation is estrogen.
1. TRUE
2. TRUE
3. TRUE
4. TRUE
5. FALSE
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The genotypes and phenotypes that result from a cross of AA and Aa (A = normal pigmentation and a = albinism) are
A. phenotypes:all normal; genotypes:50% homozygous dominant and 50% heterozygous. B. phenotypes:50% normal and 50% albino; genotypes:all heterozygous. C. phenotypes:all albino; genotypes:50% heterozygous and 50% homozygous recessive. D. phenotypes:75% normal and 25% albino; genotypes:75% heterozygous and 25% homozygous.
Preimplantation genetic diagnosis works because
A. each cell in a human at any stage can give rise to a separate individual. B. the missing genes are injected into cell nuclei of the recipient. C. the donor and recipient are siblings and therefore they share most of their genetic material. D. a cell can be removed from an 8-celled human embryo and the remaining 7 cells can continue developing.
Use the following key to choose the most correct answer.A. The first item is greater than the second item.B. The first item is less than the second item.C. The first item is equal or nearly equal to the second item.(1) Blood pressure in the aorta;(2) Blood pressure in the superior vena cava
Fill in the blank(s) with the appropriate word(s).
What should you do if a client comes in for a massage and is ill?
a. Send them home. b. Perform light massage. c. Refer them to a physician. d. Wear gloves.