Which of the following statements about chromosomes is correct?
a. An embryo's sex is determined by the specific arrangement of all 23 chromosome pairs.
b. The egg cell from the mother has a sex chromosome that can be either an X or a Y.
c. A female's sex chromosomes are symbolized XX.
d. The female egg contains 23 chromosomes, whereas the male sperm contains only 22 chromosomes.
C
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During __________, children use their current schemes to interpret the external world, whereas in __________, children create new schemes or adjust old ones after noticing that their current ways of thinking do not capture the environment completely.
Fill in the blank(s) with the appropriate word(s).
Which of the following is true of the concept y hat?
A. It doesn't tell us much in regression B. It's a predicted outcome C. It tells us pretty much everything about a relationship D. It's where the regression line crosses the y intercept