The ____ of the eye is a tissue that is densely
packed with photoreceptors. In the above
diagram of the eye, which letter identifies it?
a. lens; A
b. vitreous body; C
c. retina; C
d. sclera; A
e. cornea; D
C
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Changes to an organism's DNA can cause unexpected traits to be expressed in its offspring. DNA in an individual's gametes will most likely be altered before being passed to offspring if exposed to
A. x-rays B. loud sounds C. magnetic fields D. extreme temperatures
The placement of prokaryotes into major clades within the domains Archaea and Bacteria has been based on __________.
a. molecular comparisons b. fossil records of prokaryotes that have been recently discovered c. Gram stain results and colony characteristics when grown on solid media d. shape and motility e. nutritional modes and ecology
Which of the following statements is NOT true?
a In asexual reproduction, the parent passes a complete set of genes to its offspring. b. In sexual reproduction, both meiosis and fertilization must occur during the life cycle. c. In sexual reproduction, a human offspring receives two genes for every trait. d. Sexual reproduction puts together new combinations of genes. e. Sexual reproduction produces clones.
A true coelom develops within the ectoderm
____________________ Indicate whether the statement is true or false.