With __________, gametes are typically released
into water.Fill in the blank(s) with the appropriate word(s).
Answer: external fertilization
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Sound frequencies are measured in hertz (cycles per second). The more cycles per second, the higher the pitch. The wife of the 50 year old carpenter says that her husband is hard of hearing and should see a doctor. The husband says there’s nothing wrong with him, he just has trouble with high-pitched, female voices. Based on the data, who is right?
1.The wife; her husband does indeed have a reduced ability to hear across a range of sounds.
2.The husband; his hearing loss is only in the higher frequencies.
Two populations that have no gene flow between them are likely to
a. become more different with time. b. become more alike with time. c. become more alike if the directional selection pressures are different. d. stay the same unless mutations occur.
Picrophilus has a pH optimum below 1 and can even grow at or near pH 0.
Answer the following statement true (T) or false (F)
Explain how microevolution and artificial selection are demonstrated by the wide variety of dog breeds currently in existence
What will be an ideal response?