A cross between two individuals with different phenotypes that resulted in approximately 50% of each type of offspring would indicate the cross was ________
A) true dominant to a heterozygous dominant
B) a homozygous recessive crossed to a heterozygous recessive
C) a heterozygous dominant crossed to a homozygous recessive
D) true breeding dominant to recessive
E) a heterozygous dominant crossed to a heterozygous recessive
Answer: C
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Fill in the blank(s) with the appropriate word(s).
Draw a cladogram that for the following animals: sponges, cnidarians, flatworms, echinoderms, chordates, molluscs,
annelids, nematodes, and arthropods. On your cladogram indicate the points where the following evolved: 1) true tissues, 2) bilateral symmetry, 3) three germ layers, 4) segmentation, 5) protostome development, and 6) deuterostome development. What will be an ideal response?
Gel ________ is a process that separates DNA or protein fragments according to their size, by causing them to migrate within a gel in response to an electric field.
A. blotting B. electrophoresis C. migration D. duplication
Segmented worms (annelids), roundworms (nematodes), and flatworms (platyhelminths):
a. make up a monophyletic clade. b. are all asexual. c. are all internal parasites. d. are all bilaterally symmetrical. e. Only a) and d) are correct.