BIOL 2P02 Lecture : The Structure of Genomes

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fuchsiahare261

17 Dec 2011

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> how dna is put together to make an organism. > the problem of dna content & genome compositors. > composition & function of dna in the genome. > need to understand all of the above at end of this section! > flowering plants have more dna than humans. > a single amoeba (simplest eukaryotic organism) has a genome of-200. 000 mb (mega base. > c-value paradox: amount of dna carried by an organisms in the genome does not correlate with the complexity of an organism! pairs) > dna can be grouped into 3 subcategories. > complexity is incorporations of elements needed to assemble an organism. > the part of dna that expresses information. > does not necessarily refer to genes (introns and exons alike) > variations in gene number cannot explain variations in genome size. > non-repeated fractions are where the genes are located, unique sequences. > gene: sequence coding tor amino acids, proteins, and rna.

Related Questions

Please answer everything

1. Which of the following choices most accurately describes the proteins that form the linker histones of the chromatosome?

A) H2A, H2B, H3, H4

B) H2A, H1t, H5, H3

C) H5, H1a-e, H1t, H10

D) H3A, H1, H4A, H5

2. Which of the followings is not an example of randomly repeated DNA?

A) Minisatellites

B) Alphoid DNA in Centromere

C) Retrotransposons

D) Microsatellites

3) Which of the followings is not found in the human genome?

A) Long interspersed nuclear repeat

B) Short interspersed nuclear repeat

C) Insertional sequence

D) Long terminal repeat

4) Which of the following is not true?

A) Major portion of human genome is placed by repetitive sequences

B) The yeast genome is very compact

C) The higher eukaryotic organisms always have more complex genome

D) The genes make up only a small part of the human genome

5) What does the functional analysis of genome suggest the researchers about eukaryotic organisms?

A) All eukaryotic organisms have the same numbers of genes in each functional category.

B) All eukaryotic organisms have approximately the same number of genes.

C) Complex organisms have a larger portion of unknown genes

D) Complex organisms have greater numbers of genes in each functional category

E) Simpler organisms contain many fewer types of gene when compared to complex organisms

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 donât 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.

What is a genome? How is genome size defined? Why is it important that scientists know the base sequence of genomes? How does genome size relate to complexity of the organism?Briefly explain how DNA is sequenced.

olivegoldfish154

BIOL 2P02 Lecture : The Structure of Genomes

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