General Biology

In sequencing a bacterial genome, a researcher notes that G is more common on the leading strand ...

In sequencing a bacterial genome, a researcher notes that G is more common on the leading strand ...

In sequencing a bacterial genome, a researcher notes that G is more common on the leading strand than the lagging strand. This is an example of what phenomenon?
 
  What will be an ideal response?

hamzawild6   31   1 Reply

Sherrieann22

Explain how the centromere-drive hypothesis accounts for rapid evolution at the centromeres. What ...

Explain how the centromere-drive hypothesis accounts for rapid evolution at the centromeres. What ...

Explain how the centromere-drive hypothesis accounts for rapid evolution at the centromeres.
 
  What will be an ideal response?

sinnopal   44   1 Reply

ngchristinee

Why are transposons considered selfish genetic elements?

Why are transposons considered selfish genetic elements?

Why are transposons considered selfish genetic elements?
 
  What will be an ideal response?

Dkavanagh   53   1 Reply

master1998

In the syntenic dot plot of E. coli K-12 strains A and B, there is a single circled dot in the lower ...

In the syntenic dot plot of E. coli K-12 strains A and B, there is a single circled dot in the lower ...

In the syntenic dot plot of E. coli K-12 strains A and B, there is a single circled dot in the lower right corner of the plot. How do you interpret the position of this dot in terms of the gene orders of the two strains?
 
  What will be a

GrayHimakar   35   1 Reply

miguelhdz8

In the following figure, the genome of the hepatitis B virus is annotated with the proteins produced ...

In the following figure, the genome of the hepatitis B virus is annotated with the proteins produced ...

In the following figure, the genome of the hepatitis B virus is annotated with the proteins produced from var-ious regions in the genome.
 
  How many distinct proteins and fragments of proteins can be produced from the region of the genom

Nana Yaa   34   1 Reply

wow678917645

What are transcription factors and how do they address the G-value paradox?

What are transcription factors and how do they address the G-value paradox?

What are transcription factors and how do they address the G-value paradox?
 
  What will be an ideal response?

drfhrx   32   1 Reply

Sherrieann22

A researcher collects a soil sample and sequences the entire genomes of two prokaryotes found in the ...

A researcher collects a soil sample and sequences the entire genomes of two prokaryotes found in the ...

A researcher collects a soil sample and sequences the entire genomes of two prokaryotes found in the sample.
 
  In these genomes, she finds identical prophage DNA located in different areas of the two genomes. Based on the similarity of t

peeeps   29   1 Reply

ngchristinee

Under the neutral model, allele frequency distributions are the product of:

Under the neutral model, allele frequency distributions are the product of:

Under the neutral model, allele frequency distributions are the product of:
 
  a. effective population size.
  b. mutation rate.
  c. selection.
  d. A and B.
  e. None of the above.

Kingchris9   17   1 Reply

findyourbliss99

A researcher is interested to test the hypothesis that a 100 base pair stretch of a given gene is ...

A researcher is interested to test the hypothesis that a 100 base pair stretch of a given gene is ...

A researcher is interested to test the hypothesis that a 100 base pair stretch of a given gene is under selection.
 
  She sequences this gene region in 30 individuals, each of two populations. She finds that within either popula-tion, the

Bromandude12   33   1 Reply

Susannamaj1

Consider two species, one of which has an effective population size that is five orders of magnitude ...

Consider two species, one of which has an effective population size that is five orders of magnitude ...

Consider two species, one of which has an effective population size that is five orders of magnitude greater than the other. In which species would you expect to see a smaller genome size? Explain your reasoning.
 
  What will be an ideal

rutu0309   44   1 Reply

etherae1

A limitation of examining Ka/Ks ratios is that:

A limitation of examining Ka/Ks ratios is that:

A limitation of examining Ka/Ks ratios is that:
 
  a. they are sensitive to demographic changes.
  b. they cannot be used in introns.
  c. they can only detect positive selection.
  d. they cannot detect drift.
  e. No

chubi1993   42   1 Reply

FiercerChin

The McDonaldKreitman test: (Multiple Choice)

The McDonaldKreitman test: (Multiple Choice)

The McDonaldKreitman test:
 
  a. compares substitution rates between and within species.
  b. compares substitution rates across two time scales.
  c. compares substitution rates across genes.
  d. A and B.
  e. All of

bosh   24   1 Reply

trm1986

When examining the recombination rate across a chromosome, a researcher detects an area of high ...

When examining the recombination rate across a chromosome, a researcher detects an area of high ...

When examining the recombination rate across a chromosome, a researcher detects an area of high recombi-nation rates. What could she infer based on this observation?
 
  a. This region is likely the centromere.
  b. This region is lik

tyler0468   34   1 Reply

miguelhdz8

Recombination rates across a chromosome:

Recombination rates across a chromosome:

Recombination rates across a chromosome:
 
  a. are highly variable.
  b. are large in recombination hotspots.
  c. are nearly equal.
  d. A and B.
  e. None of the above.

mndcurrier   49   1 Reply

hamdan

The exon theory of genes states that:

The exon theory of genes states that:

The exon theory of genes states that:
 
  a. genes consist solely of exons.
  b. introns are deleterious and are purged from the genome.
  c. introns lead to recombination errors.
  d. many current genes arose through the re

mschares   64   1 Reply

gatt3130

Why are regions in the centromeres and telomeres rarely expressed?

Why are regions in the centromeres and telomeres rarely expressed?

Why are regions in the centromeres and telomeres rarely expressed?
 
  a. They are wound around histone proteins.
  b. They are rapidly evolving.
  c. They are packed in heterochromatin.
  d. A and B.
  e. All of the ab

azuniga34   36   1 Reply

Susannamaj1

Telomeres are necessary because: (Multiple Choice)

Telomeres are necessary because: (Multiple Choice)

Telomeres are necessary because:
 
  a. RNA needs a DNA template.
  b. Okazaki fragments need a binding region.
  c. prokaryotic genomes are circular.
  d. DNA polymerase only works 5' -> 3'.
  e. chromosomes would grow

horatioo   44   1 Reply

umogal

During cell division, which noncoding region of a chromosome is necessary for proper cell division? ...

During cell division, which noncoding region of a chromosome is necessary for proper cell division? ...

During cell division, which noncoding region of a chromosome is necessary for proper cell division?
 
  a. origin of replication
  b. telomeres
  c. centromeres
  d. Okazaki fragments
  e. introns

Blueyasser   84   1 Reply

umogal

How many inversions can be inferred from the following figure?

How many inversions can be inferred from the following figure?

How many inversions can be inferred from the following figure?
 
  a. one
  b. two
  c. three
  d. four
  e. five

mfarhanhuda   33   1 Reply

trm1986

Transposons: (Multiple Choice)

Transposons: (Multiple Choice)

Transposons:
 
  a. move within a genome without making duplicates.
  b. move within a genome while making duplicates.
  c. use an RNA intermediate.
  d. use a DNA intermediate.
  e. All of the above.

mfarhanhuda   64   1 Reply

gatt3130

How does mutational bias influence G-C content?

How does mutational bias influence G-C content?

How does mutational bias influence G-C content?
 
  a. G is likely to mutate to A.
  b. C is likely to mutate to T.
  c. G is unlikely to mutate to C.
  d. A is unlikely to mutate to T.
  e. All of the above.

aynuriya   62   1 Reply

Umeshnepal825

GC content refers to: (Multiple Choice)

GC content refers to: (Multiple Choice)

GC content refers to:
 
  a. the G-value paradox.
  b. the C-value paradox.
  c. the fraction of G-C nucleotides in the genome.
  d. A and B.
  e. All of the above.

Asian101   73   1 Reply

elleduis

When examining the complete genome sequence of E. coli 0157:H7, a researcher notes that only one of ...

When examining the complete genome sequence of E. coli 0157:H7, a researcher notes that only one of ...

When examining the complete genome sequence of E. coli 0157:H7, a researcher notes that only one of two possible codons coding for lysine is observed in the genome. This is likely the result of:
 
  a. mutational bias.
  b. this gene

Bromandude12   45   1 Reply

haydenpc

Syntenic dot plots are useful when:

Syntenic dot plots are useful when:

Syntenic dot plots are useful when:
 
  a. comparing gene orders in prokaryotes.
  b. identifying inversions.
  c. examining genomic evolution.
  d. A and B.
  e. All of the above.

Fred   20   1 Reply

msbrit90

Horizontal gene transfer: (Multiple Choice)

Horizontal gene transfer: (Multiple Choice)

Horizontal gene transfer:
 
  a. is also known as lateral gene transfer.
  b. occurs via transduction.
  c. occurs via transformation.
  d. occurs via conjugation.
  e. All of the above.

Asian101   80   1 Reply

a_simon616

How is DNA acquired during conjugation?

How is DNA acquired during conjugation?

How is DNA acquired during conjugation?
 
  a. from the environment
  b. from bacteriophage
  c. from other bacteria
  d. all of the above
  e. none of the above

jamiscott   23   1 Reply

FiercerChin

What does the figure above tell us about the G-value paradox in prokaryotes?

What does the figure above tell us about the G-value paradox in prokaryotes?

What does the figure above tell us about the G-value paradox in prokaryotes?
 
  a. The numbers of protein coding genes increase with genome size.
  b. There is no G-value paradox in prokaryotes.
  c. Bacteria are more complex th

EnRou   20   1 Reply

14arnfen

Prokaryotes may have: (Multiple Choice)

Prokaryotes may have: (Multiple Choice)

Prokaryotes may have:
 
  a. one single circular chromosome.
  b. many circular chromosomes.
  c. one single linear chromosome.
  d. A and B.
  e. A, B, and C.

Bromandude12   63   1 Reply

TRedus

The figure above demonstrates: (Multiple Choice)

The figure above demonstrates: (Multiple Choice)

The figure above demonstrates:
 
  a. how different words can be constructed from the same letters.
  b. how viral genomes can be compressed.
  c. how different proteins can be produced from the same reading frame.
  d. how

mfarhanhuda   39   1 Reply

jessicadbarnes

Viral genomes: (Multiple Choice)

Viral genomes: (Multiple Choice)

Viral genomes:
 
  a. may consist of DNA.
  b. may consist of RNA
  c. are linear.
  d. are circular.
  e. All of the above.

sharon1234   53   1 Reply

TRedus

Multi-drug-resistant Mycobacterium tuberculosis is a bacteria that causes the disease tuberculosis ...

Multi-drug-resistant Mycobacterium tuberculosis is a bacteria that causes the disease tuberculosis ...

Multi-drug-resistant Mycobacterium tuberculosis is a bacteria that causes the disease tuberculosis (TB).
 
  This form of tuberculosis infection cannot be treated with the standard TB drugs. What genetic elements like-ly account for the an

GrayHimakar   48   1 Reply

Susannamaj1

The importance of gene networks rather than gene number resolves which evolutionary genomics issue? ...

The importance of gene networks rather than gene number resolves which evolutionary genomics issue? ...

The importance of gene networks rather than gene number resolves which evolutionary genomics issue?
 
  a. C-value paradox
  b. conflict between genome size and organismal complexity
  c. conflict between genome size and cell siz

Asian101   57   1 Reply

Greatshiz55

The G-value paradox states that:

The G-value paradox states that:

The G-value paradox states that:
 
  a. genome size does not correlate with organismal complexity.
  b. the number of protein coding sequences do not correlate with organismal complexity.
  c. genome size does not correlate with

sadkat   38   1 Reply

trackbeast13

Factors that contribute to overall genome size include:

Factors that contribute to overall genome size include:

Factors that contribute to overall genome size include:
 
  a. small genetic elements capably of self-catalyzing their movement.
  b. selection on cell size.
  c. selection on replication speed.
  d. A and B.
  e. A, B,

jamiscott   38   1 Reply

jfitz2343

The nematode, C. elegans, and humans have nearly identical numbers of protein coding genes, yet ...

The nematode, C. elegans, and humans have nearly identical numbers of protein coding genes, yet ...

The nematode, C. elegans, and humans have nearly identical numbers of protein coding genes, yet humans have much more complex organismal features. This is an example of:
 
  a. the importance of regulatory networks.
  b. the G-value p

bosh   45   1 Reply

ffattack

The C-value paradox is: (Multiple Choice)

The C-value paradox is: (Multiple Choice)

The C-value paradox is:
 
  a. the incongruity of genome size with organismal complexity.
  b. resolved with the identification of noncoding DNA.
  c. the incongruity of genome size with noncoding DNA.
  d. A and B.
  e

peeeps   37   1 Reply

jhncyss

Eukaryotic genome size is: (Multiple Choice)

Eukaryotic genome size is: (Multiple Choice)

Eukaryotic genome size is:
 
  a. correlated with organismal complexity.
  b. uncorrelated with organismal complexity.
  c. largest in humans.
  d. correlated with organismal size.
  e. uncorrelated with organismal size

brandonq2015   38   1 Reply

KaeKae

From the figure above, one can deduce that larger genomes:

From the figure above, one can deduce that larger genomes:

From the figure above, one can deduce that larger genomes:
 
  a. tend to have a greater proportion of coding DNA than smaller genomes.
  b. tend to have a lesser proportion of coding DNA than smaller genomes.
  c. occur in more

Hannah g   29   1 Reply

jojocolombiana

A bacteriophage was the first organism to have its genome sequenced. Sequencing of this genome was ...

A bacteriophage was the first organism to have its genome sequenced. Sequencing of this genome was ...

A bacteriophage was the first organism to have its genome sequenced. Sequencing of this genome was facili-tated by:
 
  a. its complex genome.
  b. its short genome.
  c. previous study of bacterial genomes.
  d. A and C.

Kingchris9   69   1 Reply

kim_kilgore

In Franks et al. (2007) study of flowering time of Brassica rapa, the observed change in the flower ...

In Franks et al. (2007) study of flowering time of Brassica rapa, the observed change in the flower ...

In Franks et al. (2007) study of flowering time of Brassica rapa, the observed change in the flower time was much shorter relative to the estimated change in flowering time.
 
  Please provide an explanation for this finding not discussed

EZ   29   1 Reply

fouraker