Animals with a backbone are 

A. vertebrates.
B. chordates.
C. colonial.
D. invertebrates.


A. vertebrates.

Biology & Microbiology

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Which of the following occurs to make a genetic profile?

a. DNA is isolated from a stem cell. b. DNA is cut into fragments, using enzymes. c. Specific genes and loci are identified on the DNA. d. DNA is transcribed and translated.

Biology & Microbiology

Which of the following is TRUE concerning

seeds?

a. Present-day ferns produce seeds. b. Seeds contain an immature sporophyte. c. Pollen grains mature into seeds. d. Seeds contain a food source. e. All of these are true

Biology & Microbiology

Fungi ________.

A. produce chlorophyll under aerobic conditions and are prokaryotes or eukaryotes, depending on the species B. produce chlorophyll under aerobic conditions C. are prokaryotes or eukaryotes, depending on the species D. are eukaryotic organisms

Biology & Microbiology

When two secondary oocytes are released from the ovaries and are fertilized by different sperm cells, what is the result?

A) clones B) identical twins C) conjoined twins D) fraternal twins

Biology & Microbiology