Estrogen and progesterone are produced in the ovaries.
The answer is stabilizing selection.
<span>Sickle-cell anemia is a recessive disorder caused by the presence of two recessive alleles "s", so genotype is "ss". This disorder is characterized by sickle hemoglobin. In an area with malaria, heterozygous individuals "Ss" (with one dominant allele and one recessive allele) have an advantage. These individuals will have both normal and sickle hemoglobin. But pathogen that causes malaria affect only normal hemoglobin, so heterozygous individuals will have half of the hemoglobin resistant to the pathogen and those individuals are resistant to malaria.</span>
Stabilizing selection favors heterozygotes Ss, disruptive selection favors dominant (SS) and recessive (ss) homozygotes, while directional selection favors dominant (SS) or recessive (ss) homozygote. Since in this example, people with genotype Ss (heterozygotes) are in advantage, then this is an example of stabilizing selection.
Vagina to uterus to oviduct
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A sperm joins an egg cell in the process of fertilization. Because first both of the parents must contribute one gamete, then the sperm and egg unite in the process called fertilization, and finally this process forms a single celled structure called a zygote which contains the full genetic information that will be passed to the offspring. And now the offspring will have half of it's genetics from both of it's parents.
I know all of this because I just learned, studied, and took a test on this topic. Plus I checked Google just to make sure I was correct. Hope I helped you!
- Amber
Answer:
mitochondria produces energy in the form of ATP molecules
