Which of the following statements is incorrect concerning sister chromatids?
A. The formation of sister chromatids doubles the amount of DNA in a cell.
B. Sister chromatids consist of two identical copies of a single homologue.
C. Sister chromatids are held together at the centromere by kinetochore proteins.
D. Sister chromatids are formed during the S phase of the cell cycle.
E. Sister chromatids separate during telophase.
E. Sister chromatids separate during telophase.
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Genes associated with embryonic development are known as
A) homologous genes. B) sigma factors. C) heterologous genes. D) hopanoids. E) homeotic genes.
The type of epithelial cell found in the lining of some
airways and parts of the gut? a. simple cuboidal. b. simple squamous. c. simple columnar. d. stratified. e. stratified columnar.
Compare and contrast the digestive process in animals with two-way flow through their digestive
system and those that have a digestive system with one-way flow. What will be an ideal response?
The _____ can be used to measure whether a substance is an acid or a base.
a. pH paper b. Litmus paper c. Endothermic Reaction d. The water agar e. Blood agar