The zygote, first cell of the next generation, is formed by the union of egg and sperm. it receives: A random number of chromosomes from each parent
Indicate whether the statement is true or false.
Answer: False.
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A survivorship curve with uniform death rates over time is most likely to be a type _______ curve.
A. I B. II C. III D. IV E. V
Sympatric speciation occurs
a. before allopatric speciation. b. together with allopatric speciation. c. after allopatric speciation. d. within the home range. e. outside the home range.
The phenomenon of fusion is likely to occur when, after a period of geographic isolation, two populations meet again and _____
A) an increasing number of infertile hybrids is produced over the course of the next one hundred generations B) no reproduction occurs in the hybrid zone C) an increasing number of viable, fertile hybrids is produced over the course of the next one hundred generations D) a decreasing number of viable, fertile hybrids is produced over the course of the next one hundred generations
After Schiff reagent, tissues are rinsed in a sulfite solution to:
a) fix the stain in the tissue b) differentiate the stain c) remove the excess leucofuchsin d) oxidize the tissue