Does a passing warm front increase or decrease air pressure

1 answer:

5 0

Got this off yahoo answers the answer is the surface pressure will increase as the front will usually boundary or front will have the lowest pressure. This is where the lifting of air usually occurs as one kind of air mass meets another. The only exception may occur when the front is elevated or aloft which happens most often in mountainous valley regions.

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Plants don’t move freely. How do the plant structures shown in the three images help to ensure successful reproduction? Explain

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Brown spotting of the teeth in humans is caused by a dominant X-linked gene. If a man with normal teeth marries a woman with bro

nata0808 [166]

Answer:

25%

Explanation:

The female with brown teeth had a father with normal teeth. Since normal teeth is a recessive trait, the father would have been homozygous recessive for the trait and would have transmitted one recessive allele to the female. Therefore, the female is heterozygous dominant for brown teeth.

Let's assume that the allele for brown teeth is X^B while the one for normal teeth is X^b. The genotype of heterozygous dominant female would be X^BX^b and that of the male with normal teeth would be X^bY.

A cross between X^BX^b and X^bY gives progeny in following phenotype ratio= 1/4 daughter with brown teeth: 1/4 daughter with normal teeth: 1/4 son with brown teeth: 1/4 son with normal teeth. Therefore, the probability of having a daughter with brown teeth is = 25%