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kiruha [24]
3 years ago
8

How are the two strands of a dna molecule bonded together to form a double helix?

Biology
1 answer:
zvonat [6]3 years ago
3 0
Guanine and adenine hope that helps I think
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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]

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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.

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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%

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3 years ago
I need too know the answer
Dmitrij [34]
 answer is polygenic inheritance
5 0
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6 0
3 years ago
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