The actinoplanetes can be found in ________ habitats.
A. freshwater
B. marine
C. soil
D. All of the choices are correct.
Answer: D
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The sister chromatids become separated during ____ of meiosis
a. metaphase I b. anaphase I c. telophase I d. anaphase II e. prophase II
Body cells of human females contain _____
a. one X chromosome b. two X chromosomes c. one Y chromosomes d. two Y chromosomes e. one X and one Y chromosome
Controls over biosynthesis
What will be an ideal response?
An embryo with two X chromosomes will develop female characters because of
a. the presence of female hormones in development. b. the absence of testosterone during early embryology. c. the SRY regions of the X chromosomes. d. maternal substances passed to the zygote during fertilization. e. human chorionic gonadotropin.