The phenotype of an organism reflects only part of its genotype
Indicate whether the statement is true or false
TRUE
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What is the primary source of energy for nearly ALL of the earth's ecosystems?
Toxic shock syndrome
A. is due to exotoxins produced by Streptococcus pyogenes. B. is due to exotoxins produced by Staphylococcus aureus. C. may spread from person to person. D. has a very low rate of recurrence, approximately 1%.
Through meiosis,
a. alternate forms of genes are shuffled. b. parental DNA is divided and distributed to forming gametes. c. the diploid chromosome number is reduced to haploid. d. offspring are provided with new gene combinations. e. all of these occur.
The only known population of a reptile species lives on an African mountain. The population is relatively large, but no close relatives of this species are known. Suppose you could stop all mutations within the population and all emigration out of this
population. Which statement best describes the probable future of this population? A) The population will decline and become extinct after a few generations because of excessive inbreeding. B) Genetic drift will cause major evolutionary changes in the population. C) Evolution will continue as natural selection acts on the genetic variability that exists in the population. D) Although the population will cease to change, it may survive for as long as the environment remains constant.