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Serga [27]
3 years ago
15

The phylogeny tree above is used to explain what major idea/component of the biological theory of evolution?

Biology
1 answer:
GaryK [48]3 years ago
3 0

Answer: I think the answer is C.

Explanation:

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What phenotypic ratio would you expect as a result of a test cross between two individuals where 9) one that is homozygous reces
olasank [31]

What phenotypic ratio would you expect as a result of a test cross between a dihybrid organism and one that is homozygous recessive for alleles at two independent loci?

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d. 1:2:1

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Answer:

c. 1:1:1:1

Explanation:

When a heterozygous individual for two genes is test crossed with a double homozygous recessive individual, the progeny is obtained in 1:1:1:1 phenotypic ratio. This occurs as the heterozygous dominant individual forms four types of gametes in 1:1:1:1 ratio while the homozygous recessive individual would form only one type of gamete having one recessive allele for each gene.  

For example, a test cross between TtRr (tall and red) and ttrr (short and white) would produce a progeny in following ratio=

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8 0
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Answer:

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Explanation:

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The amniotic fluid __________. Group of answer choices delivers food and oxygen to the developing organism helps keep the temper
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The amniotic fluid helps keep the temperature of the prenatal world constant.

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In the beginning, amniotic fluid is especially water with electrolytes, however, using approximately the 12-14th week the liquid also incorporates proteins, carbohydrates, lipids and phospholipids, and urea, all of which aid in the growth of the fetus.

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Do you feel humans have over-subscribed some medications?
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Yes.I feel humans have over-subscribed some medications

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