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19 Feb 2019

Genome sequencing has given us unprecedented levels ofunderstanding of the evolution and function of bacteria.

a) What is the typical range of sizes for bacterial genomes?

b) Why are bacterial genomes not all the same size?

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Collen Von
Collen VonLv2
22 Feb 2019

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Related questions

Consider the genome size variation, which of the statements are correct (Can be multiple answers)

A. Most of the genome size variation is due to non-coding sequences.

B. Birds and mammals have a small range of genome size variation because their genomes are more stable and don’t change as often.

C. As a general trend, genome sizes increase with organism complexity.

D. Transposable element insertions explain all genome size variation among species.

1. Imagine you are a scientistsequencing the genomes of organisms. You begin two newprojects, one sequencing the genome of an amoeba and the secondsequencing the genome of a cow. You discover that thegenome size (sometimes called C-value) of the amoeba is nearly 200Xas large as that of the cow.

a. Should this come as a surprise? Why orwhy not?

b. What characteristic of eukaryotic organismsexplains the variation in genome sizes?

c. What would your expectation be if you were tosequence the genome of a bacterium? Explain

please answer both questiones and the first one is more important:

1. Suppose you are discussing evidence for evolution with someone who does not believe in evolution. Describe Three kinds of molecular data that provide evidence that different lineages (e.g. humans and chimpanzees) have evolved from a common ancestor.

2. What are the major differences between viral, bacterial, and eukaryotic genomes? What demographic differences between species might account for some of the differences we observe at the level of the whole genome?

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