Which statement about embryonic induction is not true? a. One group of cells induces adjacent cells to develop in a certain way. $b$. It triggers a sequence of gene expression in target cells. $c .$ single cells cannot form an inducer. $d$. A tissue may induce itself. $e .$ The chemical identification of specific inducers has been difficult.
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Step 1: Embryonic induction is a process where one group of cells induces adjacent cells to develop in a certain way. Show more…
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Which statement about induction is not true? a. One group of cells induces adjacent cells to develop in a certain way. b. It triggers a sequence of gene expression in target cells. c. single cells cannot form an inducer. d. A tissue may be induced as well as make an inducer. e. The chemical identification of specific inducers has not been achieved.
Which of the following statements regarding early embryonic stages is false? a. The endoderm, mesoderm, and ectoderm are germ layers. b. The trophoblast is a germ layer. c. The inner cell mass is a source of embryonic stem cells. d. The blastula is often a hollow ball of cells.
Which of the following is a valid difference between embryonic stem cells and the stem cells found in adult tissues? a. In laboratory culture, only adult stem cells are immortal. b. In nature, only embryonic stem cells give rise to all the different types of cells in the organism. c. Only adult stem cells can differentiate in culture. d. Embryonic stem cells are generally more difficult to grow in culture than adult stem cells.
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