Answer: They are part of the scientific method. The test results confirm or disprove the hypothesis.
Explanation:
Answer:
Crossing over occurs during prophase I of meiosis before tetrads are aligned along the equator in metaphase I.
Explanation:
When chromatids "cross over," homologous chromosomes trade pieces of genetic material, resulting in novel combinations of alleles, though the same genes are still present. Crossing over occurs during prophase I of meiosis before tetrads are aligned along the equator in metaphase I.
Sweat, mucus, tears, and saliva all contain enzymes that kill pathogens.