The number of chromosomes characteristic of diploid eukaryotic cells, in general
A. is 46.
B. can be predicted by the size of the organism.
C. varies considerably from 2 to over 1000 in different species.
D. changes as each organism grows and ages.
Answer: C
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The closest living protistan relatives to animals are
a. poriferans. b. dinoflagellates. c. cyanobacteria. d. archaeabacteria. e. choanoflagellates.
If an X-linked disorder is lethal to the affected individual prior to the age at which one reaches reproductive maturation, the lethality will be expressed only in males. Why is this so?
What will be an ideal response?
If a plasma membrane is analogous to the cell, which of the following is analogous to the animal body?
a. a reproductive system b. a muscle system c. the skin d. a digestive system