What specifically separates during meiosis I?
A) Homologous chromosomes
B) Sister chromatids
C) The cytoplasm
D) The genome
A
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Place the following steps of allopatric speciation in their correct order:
A. A flood causes a physical barrier down the middle of a population. B. A population covers a large area. C. The two separate populations evolve differently and form new species. D. When the water recedes, the two new species do not mate. 1. first event 2. second event 3. third event 4. fourth event
During an allergic reaction, IgE antibodies bind to ____
a. B cells b. T cells c. plasma cells d. mast cells e. neutrophils
Only males can express sex-linked traits
Indicate whether the statement is true or false
In 1942 a scientist testing part of a radar system discovered that a candy bar in his pocket had melted. Intrigued, he tried placing an egg near the system he was working on; it exploded and splattered him with hot egg. In this way it was discovered that
part of the radar system could be used to cook foods, which led to the development of the microwave oven. When this kind of repurposing occurs in biological systems, it is called A) paedomorphosis. B) mutation. C) exaptation. D) adaptive radiation.