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hram777 [196]
3 years ago
7

Which event marks the beginning of the cambrian era?

Biology
1 answer:
Scilla [17]3 years ago
5 0

Answer:

D) largest mass extinction event in Earth's history

Explanation:

The cambrian era started following the pre-cambrian extinction

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natali 33 [55]
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3 years ago
Assuming a typical monohybrid cross in which one allele is completely dominant to the other, what phenotypic ratio is expected i
IgorC [24]

Answer:

Assuming the dominant allele is represented as A, and the genotype as AA and the recessive as a, and genotype as aa; then the F1 will produce the offispring. Aa, Aa, Aa,Aa in ratio: 1:1:1:1:1

This shows the dominance of allele A.

However if two of  the F1 generation are crossed then:

The  F2 is AA,Aa,Aa,aa the phenotypic ratio is

                        3   ;     1

W<u>hile the Genotypic ratio is ratio;</u>

<u>   1AA : 2Aa Aa; 1aa(1 ;2;1)</u>

Explanation:

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3 years ago
Refer to the cladogram shown above. The
Vlad [161]

Answer:

i'm like 100% positive its answer  A

Explanation:

7 0
2 years ago
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Approximately 60% of human genes are also found in fruit flies. About 97.5% of human genes are also found in mice. What does thi
tatyana61 [14]

This evidence suggest that all three living creatures that are mentioned have a common ancestor, even though they have been split into different types of groups of living organism millions of years ago.

Science suggests that all of the living organisms on the planet have a common ancestor. Since we are talking about a common ancestor that lived few hundred million years ago, the living organisms split into different groups, and they do not resemble each other nowadays. The fruit fly is an insect, and the humans and mice are mammals, so they are into totally different groups, and it is easy to see by the genetic evidence that they are very distantly related, but the humans and mice are much more closely related because they belong to the same super family, and their connection is much more recent.

3 0
3 years ago
How does the carbon in grass become part of a lion?
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B - the lion eats the grass—it cannot be A. because grass gives off o2 not co2
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