How do researchers produce whole genome sequences? Question 13 What is the main

Question

How do researchers produce whole genome sequences?

Question 13

What is the main goal of genome annotation?

Question 14

Over time, what generally happens to the genome of organisms that have become endosymbionts?

Question 15

A genomic researcher is analyzing the genome of different species of raptors. She finds that a particular sequence in the Bald Eagle genome is identical to a sequence found in the Red Tailed Hawk, while most other sequences in those two genomes differ at many nucleotides. (The most recent common ancestor between Bald Eagles and Red Tailed Hawks was approximately 6.8 million years ago, which is plenty of time for mutation to generate DNA sequence variation.)

Which of the following could explain the identical sequence in these otherwise differing genomes?

Question 16

The polymerase chain reaction (PCR) amplifies DNA by means of repeated rounds of DNA replication. This means that the ends of the amplified fragments become shorter with every round of replication.

Question 17

How does gel electrophoresis allow researchers to identify particular DNA sequences?

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Question 18 1.25 pts

The presence of an open reading frame motif suggests that the sequence is also:

By digesting the genome with restriction enzymes and then hybridizing it with the DNA of a closely related organism.

Explanation / Answer

Q.12

Genomes are sequenced in many overlapping fragments, which can be assembled by pairing their areas of overlap.

Q.13

Identifying the types of sequence in a genome and where they are located.

Q.14

It becomes expanded because the endosymbiont acquires new functions in the new host.

Q.15

The sequence encodes a gene that is critical for life and cannot be easily mutated while retaining function.

Q.16

False.

Q.17

By separating DNA fragments by differences in length relative to control DNA fragments of known size.

Q.18

An exon.

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