Answer:
Water molecules form hydrogen bonds with each other and are strongly polar. This polarity allows it to dissociate icons in salts and bonds to each other polar substances such as alcohols and acids thus dissolving them.
Answer:
A male inherits the X chromosome from his mother
Explanation:
A male then inherits the Y chromosome from his father and the X chromosome form his mother
Answer:
Hydra are simple freshwater animals, while Obelia lives in the sea or fresh water
Explanation:
The main difference is that Hydra's body shape is a polyp, while Obelia consist of polyps and medusae in its life cycle
Answer: An increase in gene flow between the bird populations.
Explanation:
The population of bird species living in the island and other one in mainland are geographically isolated because of the distance between the island and the mainland is large that does not allow birds to fly and cover the entire distance. This is the reason of reproductive isolation and restricts the gene flow between the two populations. But the creation of sandbars and tiny islands between the island and mainland created a way so that island and mainland birds can meet and reproduce. This will allow the increase in the gene flow between the two separated population of bird species.
Pleiotropic<span>: Producing or having multiple effects from a single gene. For example, the Marfan gene is </span>pleiotropic<span>, potentially causing such diverse effects as long fingers and toes (arachnodactyly), dislocation of the lens of the eye, and dissecting aneurysm of the aorta.
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