Answer the following questions true (T) or false (F)

1. The human embryo goes through a period of time with gill slits, an inheritance from an ancient ancestor.

2. The so-called modern synthesis of evolution brought together the evidence for evolution and the ideas of genetics.

3. In science, theories are well established and thus are not "theoretical" in the everyday usage of the word.


1. TRUE
2. TRUE
3. TRUE

Biology & Microbiology

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Trisomy 21 is the only autosomal trisomy that allows survival into adulthood

a. True b. False Indicate whether the statement is true or false

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Microorganisms are involved in

A. causing disease. B. curing/treating disease. C. preparing food. D. cleaning up pollutants. E. All of the choices are correct.

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All of the following are involved with chewing the cud EXCEPT

a. regurgitation of food. b. increased breakdown of food. c. exposure of new surfaces for rumen microbes. d. incorporation of more oxygen into the food.

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If two copies of a gene are different alleles, the condition is referred to as

a. homozygous. b. heterozygous. c. hybrid. d. dominant. e. codominant

Biology & Microbiology