In a frog in which the diploid number of chromosomes per cell is 24, what is the total number of
chromatids present during Prophase I?
a. 0
b. 6
c. 12
d. 24
e. 48
E
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Which one of the following terms applies to the phylum Nematoda?
A. deuterostome B. diploblastic C. Parazoa D. pseudocoelomate
A process in which a sister chromatid inherited from the mother and a sister chromatid inherited from the father pair up and form tetrads and exchange DNA to form genetically diverse gametes is called ________
A) cell cycle B) prophase C) cytokinesis D) crossing over
____ are good habitats where local reproductive success is greater than local mortality
a. Metahabitats b. Sink habitats c. Source populations d. Source habitats e. K-selected habitats
Both glycoproteins and proteoglycans contribute to the carbohydrate layer on the surface of the cell. Which of the following is not true of glycoproteins?
(a) They can be secreted into the extracellular environment. (b) They have only one transmembrane domain. (c) They have long carbohydrate chains. (d) They are recognized by lectins.