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Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
Embryology, epigenetics, prenatal development, etc.
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What structure, seen during synapsis, is indicative of a chromosome inversion? What will be an ...
What structure, seen during synapsis, is indicative of a chromosome inversion? What will be an ...
What structure, seen during synapsis, is indicative of a chromosome inversion?
 
  What will be an ideal response?
kemkem9   52   1 Reply
6 years ago
Which enzyme activity is associated with the proofreading mechanism of DNA polymerase I?
Which enzyme activity is associated with the proofreading mechanism of DNA polymerase I?
Which enzyme activity is associated with the proofreading mechanism of DNA polymerase I?
 
  A) 5'-to-3' exonuclease activity
  B) 3'-to-5' exonuclease activity
  C) 5'-to-3' polymerase activity
  D) Both A and B
  E) A
gltech99   33   1 Reply
6 years ago
The Bcl-2 gene product in its normal form can be activated to prevent cells from undergoing ...
The Bcl-2 gene product in its normal form can be activated to prevent cells from undergoing ...
The Bcl-2 gene product in its normal form can be activated to prevent cells from undergoing apoptosis (programmed cell death) in specific circumstances. It is a carefully regulated gene, being turned on only under specific circumstances.
 
noahrcline   34   2 Replies
6 years ago
Down syndrome (trisomy-21 ) is the only human autosomal trisomy in which the individuals may survive ...
Down syndrome (trisomy-21 ) is the only human autosomal trisomy in which the individuals may survive ...
Down syndrome (trisomy-21 ) is the only human autosomal trisomy in which the individuals may survive to adulthood.
 
  Indicate whether the statement is true or false
typhoon01   82   1 Reply
6 years ago
When cyclin D1 is expressed in normal levels, it stimulates the cell cycle. If overexpressed, it can ...
When cyclin D1 is expressed in normal levels, it stimulates the cell cycle. If overexpressed, it can ...
When cyclin D1 is expressed in normal levels, it stimulates the cell cycle. If overexpressed, it can promote cancer by allowing cells to overproliferate.
 
  The normal cyclin D1 gene, which has the potential to cause cancer if mutated and
aj20386   58   1 Reply
6 years ago
Which of the following is used to screen newborns for the genetic disease PKU?
Which of the following is used to screen newborns for the genetic disease PKU?
Which of the following is used to screen newborns for the genetic disease PKU?
 
  A) RFLPs
  B) ASOs
  C) Antibodies
  D) PCR
  E) All of these
amui10   40   1 Reply
6 years ago
You identify a cell in which DNA polymerase III is functional, but it seems to exhibit extremely low ...
You identify a cell in which DNA polymerase III is functional, but it seems to exhibit extremely low ...
You identify a cell in which DNA polymerase III is functional, but it seems to exhibit extremely low processivity. This is likely a defect in what structure?
 
  A) the t proteins
  B) the pol III holoenzyme
  C) the clamp loader
yaskween2003   37   1 Reply
6 years ago
A new nucleotide is added to a growing strand of DNA at the 3' end. (True or false?)
A new nucleotide is added to a growing strand of DNA at the 3' end. (True or false?)
A new nucleotide is added to a growing strand of DNA at the 3' end.
 
  Indicate whether the statement is true or false
dillosunion   38   1 Reply
6 years ago
Gametes produced by inversion heterozygotes can produce no viable recombinant chromosomes due to ...
Gametes produced by inversion heterozygotes can produce no viable recombinant chromosomes due to ...
Gametes produced by inversion heterozygotes can produce no viable recombinant chromosomes due to what phenomenon?
 
  What will be an ideal response?
Drea Anna   49   2 Replies
6 years ago
The set of transcripts present in a cell or organism is called the _____. (Fill in the blank)
The set of transcripts present in a cell or organism is called the _____. (Fill in the blank)
The set of transcripts present in a cell or organism is called the _____.
 
  Fill in the blank(s) with correct word
Rhileybrooke2   49   1 Reply
6 years ago
In some fruit flies, an inversion involving the white-eyed locus (w) moves the w+gene from one end ...
In some fruit flies, an inversion involving the white-eyed locus (w) moves the w+gene from one end ...
In some fruit flies, an inversion involving the white-eyed locus (w) moves the w+gene from one end of the X chromosome to a location nearer to the centromere. Flies with a w+ or w+/w genotype are normally expected to have red eyes.
 
  How
Rhileybrooke2   87   1 Reply
6 years ago
Only the leading strand of a DNA molecule serves as a template during replication. (True or false?)
Only the leading strand of a DNA molecule serves as a template during replication. (True or false?)
Only the leading strand of a DNA molecule serves as a template during replication.
 
  Indicate whether the statement is true or false
Ebony321   43   1 Reply
6 years ago
BRCA1 is a gene involved in repair of double-stranded DNA breaks. Mutant forms of this gene are ...
BRCA1 is a gene involved in repair of double-stranded DNA breaks. Mutant forms of this gene are ...
BRCA1 is a gene involved in repair of double-stranded DNA breaks. Mutant forms of this gene are linked to a substantial proportion of familial breast cancers.
 
  A woman who inherits a certain allele of the gene has about a 60-80 chance o
ade_tpy99   54   1 Reply
6 years ago
What effect does a Robertsonian translocation have on chromosome number?
What effect does a Robertsonian translocation have on chromosome number?
What effect does a Robertsonian translocation have on chromosome number?
 
  What will be an ideal response?
vincent_pijen   47   1 Reply
6 years ago
Genome-wide expression patterns can be studied using _____. (Fill in the blank)
Genome-wide expression patterns can be studied using _____. (Fill in the blank)
Genome-wide expression patterns can be studied using _____.
 
  Fill in the blank(s) with correct word
tleebergene   42   2 Replies
6 years ago
At the growing end of a DNA chain, DNA polymerase catalyzes the formation of a disulfide bond ...
At the growing end of a DNA chain, DNA polymerase catalyzes the formation of a disulfide bond ...
At the growing end of a DNA chain, DNA polymerase catalyzes the formation of a disulfide bond between the 3'-OH group of the deoxyribose on the last nucleotide and the 5'-phosphate of the dNTP precursor.
 
  Indicate whether the statement
yaskween2003   28   1 Reply
6 years ago
Single-celled eukaryotes can survive and reproduce in both haploid and diploid forms. Yeast spend ...
Single-celled eukaryotes can survive and reproduce in both haploid and diploid forms. Yeast spend ...
Single-celled eukaryotes can survive and reproduce in both haploid and diploid forms. Yeast spend most of their life cycle and actively reproduce in which form?
 
  What will be an ideal response?
ade_tpy99   47   1 Reply
6 years ago
The extraordinary accuracy of the DNA polymerase III enzyme lies in its ability to proofread newly ...
The extraordinary accuracy of the DNA polymerase III enzyme lies in its ability to proofread newly ...
The extraordinary accuracy of the DNA polymerase III enzyme lies in its ability to proofread newly synthesized DNA, a function of the enzyme's __________.
 
  A) 3-to-5 exonuclease activity
  B) 5-to-3 exonuclease activity
  C) 3
GIVEMEAWNSERFUC   44   1 Reply
6 years ago
Li-Fraumeni syndrome is a rare inherited disease that greatly increases a person's risk of ...
Li-Fraumeni syndrome is a rare inherited disease that greatly increases a person's risk of ...
Li-Fraumeni syndrome is a rare inherited disease that greatly increases a person's risk of developing several types of cancer. This disease stems from a mutation in the TP53 tumor suppressor gene (Nichols et al. 2001.
 
  Cancer Epidemiol
Fignshev   50   1 Reply
6 years ago
What are the two common patterns of chromosome segregation seen in the tetravalent structures found ...
What are the two common patterns of chromosome segregation seen in the tetravalent structures found ...
What are the two common patterns of chromosome segregation seen in the tetravalent structures found in translocation heterozygotes?
 
  What will be an ideal response?
bezel   36   1 Reply
6 years ago
Successful cotransformation in the yeast two-hybrid system will result in the binding of proteins ...
Successful cotransformation in the yeast two-hybrid system will result in the binding of proteins ...
Successful cotransformation in the yeast two-hybrid system will result in the binding of proteins produced by each yeast expression vector. These fusion proteins function by
 
  A) binding to the lacZ operator, preventing transcription.
cnv02   55   2 Replies
6 years ago
If an entire genome is fragmented and then a large number of pieces are sequenced, the approach is ...
If an entire genome is fragmented and then a large number of pieces are sequenced, the approach is ...
If an entire genome is fragmented and then a large number of pieces are sequenced, the approach is known as the ________ approach.
 
  Fill in the blank(s) with correct word
tiffanygaebel   44   1 Reply
6 years ago
What are the gametic consequences of a lack of cytokinesis following the first or second meiotic ...
What are the gametic consequences of a lack of cytokinesis following the first or second meiotic ...
What are the gametic consequences of a lack of cytokinesis following the first or second meiotic division?
 
  What will be an ideal response?
jdubes   36   1 Reply
6 years ago
What separates in meiosis I to reduce the diploid number (2n) of chromosomes to the haploid number ...
What separates in meiosis I to reduce the diploid number (2n) of chromosomes to the haploid number ...
What separates in meiosis I to reduce the diploid number (2n) of chromosomes to the haploid number (n)?
 
  What will be an ideal response?
costfrost   100   1 Reply
6 years ago
At the molecular level, what exactly are the mutagenic effects of UVA and UVB radiation? What ...
At the molecular level, what exactly are the mutagenic effects of UVA and UVB radiation? What ...
At the molecular level, what exactly are the mutagenic effects of UVA and UVB radiation?
 
  What will be an ideal response?
ade_tpy99   35   1 Reply
6 years ago
Where would you expect to find telomerase activity?
Where would you expect to find telomerase activity?
Where would you expect to find telomerase activity?
 
  A) At the end of a chromosome in a normal healthy eukaryotic body (somatic) cell.
  B) At the end of a chromosome in a cancerous eukaryotic body cell.
  C) On the leading s
lavagirl   51   1 Reply
6 years ago
DNA markers are DNA polymorphisms that are useful for genetic mapping. (True or false?)
DNA markers are DNA polymorphisms that are useful for genetic mapping. (True or false?)
DNA markers are DNA polymorphisms that are useful for genetic mapping.
 
  Indicate whether the statement is true or false
GermanBiter14   53   2 Replies
6 years ago
The whole-genome shotgun approach (WGS) was first used on which eukaryotic model organism? What ...
The whole-genome shotgun approach (WGS) was first used on which eukaryotic model organism? What ...
The whole-genome shotgun approach (WGS) was first used on which eukaryotic model organism?
 
  What will be an ideal response?
typhoon01   55   1 Reply
6 years ago
How does a Philadelphia chromosome occur, and what condition does it cause?
How does a Philadelphia chromosome occur, and what condition does it cause?
How does a Philadelphia chromosome occur, and what condition does it cause?
 
  What will be an ideal response?
GermanBiter14   32   1 Reply
6 years ago
Suppose you are studying a rare spontaneous cancer in cats, which you suspect is retrovirus-induced. ...
Suppose you are studying a rare spontaneous cancer in cats, which you suspect is retrovirus-induced. ...
Suppose you are studying a rare spontaneous cancer in cats, which you suspect is retrovirus-induced. What kinds of retroviral insertion could lead to cancer, and what kind of genetic signature would you look for to distinguish between them?
 
vincent_pijen   39   1 Reply
6 years ago
Barbara McClintock identified corn mutants with the unstable mutant phenotype with what pattern of ...
Barbara McClintock identified corn mutants with the unstable mutant phenotype with what pattern of ...
Barbara McClintock identified corn mutants with the unstable mutant phenotype with what pattern of color?
 
  What will be an ideal response?
Drea Anna   35   1 Reply
6 years ago
DNA primase is an RNA polymerase (True or false?)
DNA primase is an RNA polymerase (True or false?)
DNA primase is an RNA polymerase.
 
  Indicate whether the statement is true or false
Salmams   56   1 Reply
6 years ago
At the end of meiosis II, what is produced?
At the end of meiosis II, what is produced?
At the end of meiosis II, what is produced?
 
  What will be an ideal response?
Basketball1121   39   1 Reply
6 years ago
Which of the following would you find in a Sanger sequencing reaction but not in a polymerase chain ...
Which of the following would you find in a Sanger sequencing reaction but not in a polymerase chain ...
Which of the following would you find in a Sanger sequencing reaction but not in a polymerase chain reaction?
 
  A) DNA template
  B) DNA polymerase
  C) dNTPs
  D) ddNTPs
  E) DNA primer
madisonbodiford   61   1 Reply
6 years ago
RT-PCR is a PCR technique used in amplifying DNA copies of mRNA. (True or false?)
RT-PCR is a PCR technique used in amplifying DNA copies of mRNA. (True or false?)
RT-PCR is a PCR technique used in amplifying DNA copies of mRNA.
 
  Indicate whether the statement is true or false
slashbro   33   1 Reply
6 years ago
A genome sequence is considered to be complete when all its ________ sequences are included, as well ...
A genome sequence is considered to be complete when all its ________ sequences are included, as well ...
A genome sequence is considered to be complete when all its ________ sequences are included, as well as reasonable amounts of repetitive sequences.
 
  Fill in the blank(s) with correct word
yvfgkyv   43   1 Reply
6 years ago
How can the banding patterns on Drosophila polytene chromosomes be used to aid deletion mapping of ...
How can the banding patterns on Drosophila polytene chromosomes be used to aid deletion mapping of ...
How can the banding patterns on Drosophila polytene chromosomes be used to aid deletion mapping of genes on the chromosomes?
 
  What will be an ideal response?
Twatson22   74   1 Reply
6 years ago
What kinds of cancers might eventually be treated with RNAi, which you learned about in Chapter 18? ...
What kinds of cancers might eventually be treated with RNAi, which you learned about in Chapter 18? ...
What kinds of cancers might eventually be treated with RNAi, which you learned about in Chapter 18?
 
  What will be an ideal response?
rahrah23   40   1 Reply
6 years ago
In McClintock's maize studies, which genetic element is found at the site of chromosome breakage? ...
In McClintock's maize studies, which genetic element is found at the site of chromosome breakage? ...
In McClintock's maize studies, which genetic element is found at the site of chromosome breakage?
 
  What will be an ideal response?
SDINIC89   45   1 Reply
6 years ago
Okazaki fragments are made from the lagging strand of the DNA double helix. (True or false?)
Okazaki fragments are made from the lagging strand of the DNA double helix. (True or false?)
Okazaki fragments are made from the lagging strand of the DNA double helix.
 
  Indicate whether the statement is true or false
hay456   42   1 Reply
6 years ago
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