Duplications are repeated segments of genetic materials that result from unequal crossing over during meiosis or through a replication error prior to meiosis. They usually occur when homologous pairs do not line up correctly or in chromosomes with a lot of repeat sequences. Duplication of a segment of a chromosome would result in Genetic variability during evolution due to gene duplication.
Humans belong to domains eukaryota. The domain includes four of the six kingdoms in life: Protista, Fungi, Plantae and Animalia. The other two domains are Archaea and Bacteria.
Answer:
The entry of food into the stomach.
Explanation:
Gastric secretion is triggered by the act of eating which is called as reflex phase and the entry of food into the stomach called a gastric phase. The entry of the food particles into the small intestine also helps to control the secretion of gastric called an intestinal phase.
The secreted fluid in the small intestine contains some ions, acids, etc such as pepsinogen, intrinsic factor, bicarbonate, hydrochloric acid, and mucus. The reflex phase or cephalic phase helps to stimulate parasympathetic neurons that release acetylcholine chemical, then it produces the higher secretion of gastric juice.
Answer:
D
Explanation:
Improve desirable traits and help determine the heritability of a trait.
Answer:
Metric system prefixes come before a basic unit of measure to indicate a multiple (or submultiple) of that unit. Basic metric units and what they measure include: meter (length) gram (mass)
