Which of the following mammalian traits exhibits a relatively low h2 value?
A) birth weight in cattle B) litter size in mice
C) tail length in mice D) milk yield in cattle
Answer: B
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Which of the following is a possible human genotype that could result from nondisjunction of the sex chromosomes in one of the parental gametes?
A. XXY B. XYY C. XXX D. XO E. All of the answer options are correct.
All of the following statements are true
concerning mycorrhizae EXCEPT that a. the fungus may penetrate into root cells. b. mycorrhizae increase the surface area for absorption. c. roots obtain minerals from the fungus. d. the fungus provides the plant with nitrogenrich compounds. e. it is a mutualistic symbiosis
A person with this lung disease experiences a loss of elastic tissue, which makes it hard to exhale
A) pneumonia B) tuberculosis C) emphysema D) influenza
Food poisoning is often caused by a bacterium called ________
A) Salmonella B) Staph C) MRSA D) Bacillus anthracis