Answer:
D. All three primary germ layers develop into some more type of nervous tissue
Explanation: All of the primary germ layers have specific nervous tissue development. a) Ectoderm - neuroectoderm (neural tube, neural crest). b) Endoderm develops into (among others): The digestive tract and its attached glands; the inner lining of some organs, such as the lungs, nervous tissue; epidermis . c) Mesoderm - notochord signals the ectoderm to develop the neural crest more
Fertilization. It is defined as the fusion of male gamete with the female gamete
The answer is <span>0%.
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Cystic fibrosis is a recessive gene disorder so it needs two defective genes to make the disease expressed. In this case, a half shaded circle(heterozygote female) is mate with an <span>unshaded square( homozygote dominant male).
The offspring produced should be: 50% </span>heterozygote, 50% homozygote dominant.
Both homozygote dominant and heterozygote will not express the disease, so 100% of the offspring will be healthy.
