Answer: If crossing over did not occur during meiosis, there would be less genetic variation within a species. ... Also the species could die out due to disease and any immunity gained will die with the individual. Two types of gametes are possible when following genes on the same chromosomes. If crossing over does not occur, the products are parental gametes. If crossing over occurs, the products are recombinant gametes.
Explanation:
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What component of Earth’s atmosphere exists entirely as a result of photosynthesis?
Oxygen is the component of Earth's atmosphere that is existed entirely as a result of photosynthesis. Photosynthesis is a procedure that plants and other different organisms use sunlight to make their food. It is a chemical procedure.
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Answer:
muchos de los cambios que observa en el mundo que lo rodea son causados por reacciones químicas. los ejemplos incluyen dejar cambiar de color, cocinar alimentos y limpiarse. conocer algo de química puede ayudarlo a tomar decisiones cotidianas que afectan su vida.
Explanation:
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There would be more Carbon Dioxide because plants use CO2 when they go through photosynthesis.
The natural barriers include biochemical, physical, and mechanical, as well as inflammation of the body.
Natural barriers and the immune system defend the body against the species that leads to infection. The natural barriers include the mucous membranes, skin, earwax, tears, stomach acid, and mucus. Also, the usual flow of urine washes out the microbes, which enter the urinary tract.
