Which of the following is one of the differences between mitosis and meiosis?
1.Sister chromatids are attached only in meiosis, not in mitosis.
2.Cells end up with two copies of each chromosome at the end of mitosis, but with four copies of each chromosome at the end of meiosis.
3.Homologous chromosomes are separated in meiosis, while only sister chromatids are separated in mitosis.
4.When meiosis is finished, chromosomes have only one sister chromatid, while at the end of mitosis, chromosomes have two sister chromatids.
3
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Ligaments connect
(a) bones to bones. (b) skeletal muscles to bones. (c) tendons to bones. (d) skeletal muscles to tendons.
By 36 million years ago, tree-dwelling primates called anthropoids evolved
a. in tropical forests. b. in temperate savanna and grassland habitats. c. near rivers, lakes, and streams in the East African Rift Valley. d. in caves with abundant supplies of insects. e. all over the world.
A major function of the Casparian strip of the endodermal cells of a root is to
(A) protect the meristem as the root tip grows through the abrasive soil particles (B) allow for expansion of the vascular cambium as the root grows laterally (C) control the movement of materials into the vascular cylinder of the root (D) initiate lateral root growth (E) serve as a site for the storage of excess sugars in the form of starch
A normally functioning pancreas produces insulin, a hormone that causes cells to ____.
A. produce glucagon B. take up and store glucose C. synthesize protein D. break down glucose E. produce glucagon