Answer:
Gases and particles in Earth's atmosphere scatter sunlight in all directions. Blue light is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.
Answer:
This is because crossing over occurs between two homologous chromosomes. It involves an exchange of segments of their arms of the two chromosomes during Metaphase I of meiosis. Genes on the different chromosomes are, therefore, more likely to be crossed over than genes on the same chromosome. In addition, because sections of the arms are exchanged, genes that are close to each other on the same chromosome are more likely to be exchanged together (these are called linked genes) than genes that are far apart on the same chromosome.
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Each culture grew to ≈1–2 × 1010 cells, which were pelleted by centrifugation, spread on an MC plate, and incubated for 45 days.
It can contain hundreds to thousands of genes. It is estimated 20,000-25,000.
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