This feathered dinosaur is not considered an index fossil because it

1 answer:

3 0

This feathered dinosaur is not considered an index fossil because it existed too long ago, and Index fossil are organic remains of animals and plants found in the strata of sedimentary rocks, and serve to date their ages. This is done through the so-called index fossils, so called because they only existed in a certain era or geological period.

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George Beadle concluded that teosinte is the likely ancestor of maize (corn), even though the two plants appear very different.

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Answer:

Option B

Explanation:

ALL options are as follows -

a. teosinte and maize can produce fertile hybrids.

b. teosinte and maize have similar chromosomes.

c. Both Teosinte and maize have naked, soft kernel.

d. Teosinte and maize can produce fertile hybrids

Solution

Beadle started working on maize genetics since 1962 after joining graduate school at Cornell University.

During his research he found that the chromosomes of teosinte and maize possess higher similarity and also show signs of intercross ability of the two species and hence confirmed that wild teosinte is an ancestor of domesticated maize.

He later concluded that there are only 4 to 5 genes that make these two species different from each other rest all is similar.

Option B is correct

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Answer:

2. C

Explanation:

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How is the protein created from the mRNA sequence which reads AUGAUAGUGUAC different from the protein created from one that read

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To transcribe the mRNA to make the DNA, we use genetic codes called codons. These are composed of three amino acids clumped together. It could be Adenine(A), Guanine(G), Uracil(U) and Cytosine (C). The difference is that first thread contains GUG, while the second one contains AGU. GUG is for Histidine while AGU is for Serine.

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the branch of science concerned with the chemical and physicochemical processes and substances that occur within living organisms.

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Answer:

Photosynthesis

Explanation:

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