Answer choice Heliocentric And Geocentric

Biology

1 answer:

erastova [34]2 years ago

8 0

its geocentric cause Ptolemy supported the idea of the geocentric model

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Which type of mutation always produces a siop codon?<br> missense<br> nonsense<br> silent<br> point

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Nonsense mutation always produces a stop codon

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3 years ago

A small, solid, elevated lesion on the skin is a:

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Answer;

-Papule

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At the end of the citric acid cycle, most of the energy remaining from the original glucose is stored in?

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1 year ago

Leigh investigates the color of shells deposited on a beach as she walks along the coastline. She wants to know whether this var

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right on edge for ap bio

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3 years ago

In ducks, the trait for normal feathers is dominant to the trait for silky feathers. If

vesna_86 [32]

Answer: The genotype ratio is 2Ff : 2ff

The phenotype ratio is two normal feathered birds to two silky feathered birds.

Explanation: Let F represent the gene for normal feather and f represent the gene for silky feather. F is dominant while f is recessive, therefore a male that is hybrid for trait of normal feather is heterozygous and will have a genotype of Ff, a female that is homozygous for silky feather will have a genotype of ff.

A cross between Ff and ff will yield 2Ff birds and 2ff birds. Since F is dominant, a bird having genotype of Ff will manifest outwardly as blue feathered birds while ff will manifest outwardly as silky feathered birds because f is recessive and must occur in a homozygous condition in order to manifest phenotypically. Therefore, the genotype ratio is 2Ff: 2ff.

See the punnett square attached for more information

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3 years ago