The number is different than the number of chromosomes because us humans normally contain 23 pairs of chromosomes which is a total of 46 chromosomes in each cell. A change in the number of chromosomes can cause problems with growth, development, and function of the body systems.
<h2>Answer with Explanation </h2>
If threads are layered from top to bottom brown green red. Green layer will come into focus first if you are using the microscope properly. Green colour has wavelength of 500-565 nm and frequency of 530-606 THz approximately. Due its properties it will come into focus first if you are using the microscope. If anything is covered by brown, red and green, it will appear only green color first by microscope due to its specific characteristics. The visibility of colors depend on the properties which it has.
The answer is C I just learned this the other day trust me
Answer:
Mutations and crossing over during sexual reproduction
Explanation:
Mutations, the changes in the sequences of genes in DNA, are one source of genetic variation. Genetic variation can be a result of sexual reproduction during when chromosomes crossover during Meiosis I, which leads to the creation of new combinations of genes.
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Answer: "nasal septum" .
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