Which situation is a result of crossing-over during meiosis? A. Genes are rearranged, increasing the genetic variability of offspring.

B. Chromatids thicken and align themselves, helping to ensure genetic continuity.

C. Genes are duplicated exactly, ensuring that offspring will be identical to the parents.

D. Chromatids fail to sort independently, creating abnormal chromosome numbers.

Why do you think water is so important to living things

Astudent observes a star from two positions of earth in its orbit, in summer and winter, and measures the change in the position of the star. which of these can be best calculated by this method?

Osmosis is often viewed incorrectly as a process driven directly by differences in solute concentration across a selectively permeable membrane. what really drives osmosis? view available hint(s)osmosis is often viewed incorrectly as a process driven directly by differences in solute concentration across a selectively permeable membrane. what really drives osmosis? the first law of thermodynamicsthe difference in the height of water columns on either side of a selectively permeable membranethe difference in water concentration across a selectively permeable membranethe difference in sugar or ion concentration across a selectively permeable membrane