What is the major advantage of sexual reproduction over asexual reproduction?

A. genetic variability when the environment is stable
B. requirement of less energy
C. simpler form of reproduction
D. faster reproduction
E. genetic variability during an ecological disaster


E. genetic variability during an ecological disaster

Biology & Microbiology

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Being overweight, sluggish, intolerant of cold, confused, and depressed are symptoms of

a. hyperthyroidism. b. Grave's disease. c. acromegaly. d. hypothyroidism. e. Wilson's disease.

Biology & Microbiology

How are the epigenetic marks of a particular chromatin state preserved during cell division?

A. Parental, marked H2A-H2B dimers stay associated with strands after replication and recruit new H3-H4 tetramers. B. H2A-H2B dimers and H3-H4 tetramers come off during replication and assemble with unmarked histones. These new octamers then rebind to the newly replicated DNA to form nucleosomes. C. Parental, marked H3-H4 tetramers stay associated with strands after replication and recruit new H2A-H2B dimers. D. Histone chaperones make sure that at least one component of each new nucleosome is marked. E. None of these choices is correct.

Biology & Microbiology

In plant cells, starch is stored in ____

a. chloroplasts b. amyloplasts c. chromoplasts d. vacuoles e. leucoplasts

Biology & Microbiology

When the immune system is activated by a normally harmless antigen, this is called

a. an allergy. b. an innate response. c. a complement response. d. cytotoxic cell response.

Biology & Microbiology