At which point during pregnancy can human chorionic gonadotropin be detected in the mother’s blood?
1.at the time of fertilization
2.at the time of implantation
3.by the first week of pregnancy
4.by the third week of pregnancy
5.by the sixth week of pregnancy
4
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A chromosome with the centromere located two-thirds of the distance from its end could be classified as
A. metacentric. B. submetacentric. C. acrocentric. D. telocentric. E. either submetacentric or acrocentric.
A land biome is primarily defined by the dominant ________ that exist in similar climatic conditions around the world.
a. prey species b. predators c. plant species d. temperatures
Which factor would most likely lead to
hypothermia?
a. cutting the grass b. exercising c. falling through the ice d. getting the flu e. none of these
Which hormone prevents a seed released in the fall from germinating immediately?
A) auxins B) abscisic acid (ABA) C) gibberellins D) ethylene