Genetics and Developmental Biology

True or False? Promoters and enhancers act as binding sites for regulatory proteins but are not ...

True or False? Promoters and enhancers act as binding sites for regulatory proteins but are not ...

True or False? Promoters and enhancers act as binding sites for regulatory proteins but are not themselves transcribed.

▸ true

▸ false

AsadQ1   31   1 Reply

doublekud

True or False? Noncoding RNAs can function either in cis or in trans.

True or False? Noncoding RNAs can function either in cis or in trans.

True or False? Noncoding RNAs can function either in cis or in trans.

▸ true

▸ false

cjohns21   36   1 Reply

stephvelez1318

True or False? Both proteins and RNAs can be regulatory molecules.

True or False? Both proteins and RNAs can be regulatory molecules.

True or False? Both proteins and RNAs can be regulatory molecules.

▸ true

▸ false

edelynpl   34   1 Reply

bjee231

True or False? All functional noncoding RNAs are small, less than about 50 nucleotides in length.

True or False? All functional noncoding RNAs are small, less than about 50 nucleotides in length.

True or False? All functional noncoding RNAs are small, less than about 50 nucleotides in length.

▸ true

▸ false

linyuki   35   1 Reply

heavenlyangel

Which of the following statements is true?

Which of the following statements is true?

[html]Which of the following statements is true?

▸ Only a small part of a eukaryotic chromosome is transcribed, from both strands.

▸ All sequences of a eukaryotic chromosome are transcribed, primarily from one strand.

▸ Much of a eukaryotic chromo

viva902   38   1 Reply

piccola44

The bacterial glmS mRNA:

The bacterial glmS mRNA:

[html]The bacterial glmS mRNA:

▸ is self-inhibiting without any additional molecules.

▸ is self-inhibiting when bound to a metabolic product of the reaction catalyzed by the enzyme it encodes.

▸ is self-activating without any additional mol

biokam   35   1 Reply

prospectjay

If the expression of Gene A is controlled by an antisense RNA:

If the expression of Gene A is controlled by an antisense RNA:

[html]If the expression of Gene A is controlled by an antisense RNA:

▸ the antisense RNA is probably transcribed from a noncoding sequence outside of Gene A or within an intron of Gene A.

▸ the antisense RNA is probably transcr

MasterPriapis   40   1 Reply

hannahfeng

CUTs are noncoding RNAs in yeast that are transcribed from:

CUTs are noncoding RNAs in yeast that are transcribed from:

CUTs are noncoding RNAs in yeast that are transcribed from:

▸ enhancers.

▸ the promoter of a protein-coding gene.

▸ the opposite strand of a coding region.

▸ introns.

▸ heterochromatic regions.

conrad136   39   1 Reply

CJWVail2

A riboswitch:

A riboswitch:

[html]A riboswitch:

▸ must change its secondary structure to affect its activity.

▸ must change its tertiary structure to affect its activity.

▸ can change either its secondary or tertiary structure to affect its activity.

▸ must be a ribozyme.

xiaoyu000   38   1 Reply

carolyne254

A common feature among riboswitches is that:

A common feature among riboswitches is that:

[html]A common feature among riboswitches is that:

▸ they respond to some ligand.

▸ they all switch via a change in secondary structure.

▸ they are located in the 5′ UTR.

▸ they all can function as ribozymes.

▸ the switch involves an alternate s

mmaruska   44   1 Reply

djl4909

True or False? When active, both cohesins and condensins are located along the entire length of the ...

True or False? When active, both cohesins and condensins are located along the entire length of the ...

True or False? When active, both cohesins and condensins are located along the entire length of the chromosome.

▸ true

▸ false

nsdq007   42   1 Reply

isaw09

True or False? The mammalian X chromosome consists of constitutive heterochromatin.

True or False? The mammalian X chromosome consists of constitutive heterochromatin.

True or False? The mammalian X chromosome consists of constitutive heterochromatin.

▸ true

▸ false

rolotony   45   1 Reply

herroo

True or False? A mouse with a hamster PrP gene is resistant to infection with a mouse PrPSc prion.

True or False? A mouse with a hamster PrP gene is resistant to infection with a mouse PrPSc prion.

True or False? A mouse with a hamster PrP gene is resistant to infection with a mouse PrPSc prion.

▸ true

▸ false

bigben0007   44   1 Reply

Chicagokid

True or False? A heterozygote carrying an allele for albinism and an inherited wild-type allele that ...

True or False? A heterozygote carrying an allele for albinism and an inherited wild-type allele that ...

True or False? A heterozygote carrying an allele for albinism and an inherited wild-type allele that is methylated will probably have the albino phenotype.

▸ true

▸ false

srsbiz   41   1 Reply

obedbro

Both PraderWilli and Angelman syndromes are caused by the same deletion mutation.

Both PraderWilli and Angelman syndromes are caused by the same deletion mutation.

Both Prader–Willi and Angelman syndromes are caused by the same deletion mutation.

▸ true

▸ false

18iq   36   1 Reply

Ms Thickie

What would be the likely effect of translocating the mammalian Xic region to an autosome?

What would be the likely effect of translocating the mammalian Xic region to an autosome?

[html]What would be the likely effect of translocating the mammalian Xic region to an autosome?

▸ Both of the autosomes would become inactive.

▸ One of the two autosomes would be inactivated.

▸ One of the two autosomes would double its tran

usha   46   1 Reply

rotatorro

What would be the likely effect of deletion of the mammalian Xic region?

What would be the likely effect of deletion of the mammalian Xic region?

[html]What would be the likely effect of deletion of the mammalian Xic region?

▸ Both X chromosomes would become inactive in a female.

▸ The single X chromosome in a male would be inactivated.

▸ The single X chromosome in a male would doubl

drew911811   38   1 Reply

Hollywood1971

The "n 1 rule concerning the mammalian X chromosome means that:

The "n 1 rule concerning the mammalian X chromosome means that:

[html]The "n – 1 rule” concerning the mammalian X chromosome means that:

▸ one specific homolog of the two X chromosomes of a female mammal is inactivated in every cell, while the other homolog is always active in every cell.

▸ in a male mammal, th

mrtrombley92   40   1 Reply

whtsi_ep3

In a male heterozygote, the maternal allele is imprinted by methylation. Which of the following is true?

In a male heterozygote, the maternal allele is imprinted by methylation. Which of the following is true?

[html]In a male heterozygote, the maternal allele is imprinted by methylation. Which of the following is true?

▸ Half of his sperm will carry the methylated maternal allele, and the other half will carry the unmethylated paternal allele.

▸ All of h

HoracioMo   43   1 Reply

karatins

How does dosage compensation in C. elegans differ from that of mammals and Drosophila?

How does dosage compensation in C. elegans differ from that of mammals and Drosophila?

[html]How does dosage compensation in C. elegans differ from that of mammals and Drosophila?

▸ Chromosome condensation in C. elegans is accomplished by condensing homologs.

▸ Dosage compensation in C. elegans is not loca

remmylp   47   1 Reply

sherbiejr16

True or False? Replication converts a hemimethylated site to a fully methylated site.

True or False? Replication converts a hemimethylated site to a fully methylated site.

True or False? Replication converts a hemimethylated site to a fully methylated site.

▸ true

▸ false

Katseye   46   1 Reply

capsy2

True or False? Polycomb group proteins maintain specific genes in a perpetual state of activation ...

True or False? Polycomb group proteins maintain specific genes in a perpetual state of activation ...

True or False? Polycomb group proteins maintain specific genes in a perpetual state of activation through multiple cell divisions.

▸ true

▸ false

jdot   35   1 Reply

doublekud

True or False? Pc-G proteins are responsible for initiating but not maintaining repression.

True or False? Pc-G proteins are responsible for initiating but not maintaining repression.

True or False? Pc-G proteins are responsible for initiating but not maintaining repression.

▸ true

▸ false

Mostafa91   40   1 Reply

bjee231

True or False? Epigenetic inheritance occurs when a structural change to the DNA (that does not ...

True or False? Epigenetic inheritance occurs when a structural change to the DNA (that does not ...

True or False? Epigenetic inheritance occurs when a structural change to the DNA (that does not involve a nucleotide sequence change) affects gene function.

▸ true

▸ false

HoracioMo   35   1 Reply

whtsi_ep3

True or False? A gene that is moved from its original location to a location close to a telomere is ...

True or False? A gene that is moved from its original location to a location close to a telomere is ...

True or False? A gene that is moved from its original location to a location close to a telomere is likely to become more active.

▸ true

▸ false

edehghany   46   1 Reply

ecunis1

What is the phenotypic effect of the mutant Sup35 genotype [PSI+] in yeast?

What is the phenotypic effect of the mutant Sup35 genotype [PSI+] in yeast?

[html]What is the phenotypic effect of the mutant Sup35 genotype [PSI+] in yeast?

▸ Transmission of disease to other cells

▸ Lethality

▸ There are many nonlethal phenotypic effects.

▸ Suppression of the gene's transcription

▸ Failure to t

Noar   46   1 Reply

jordankites45

What is the approximate percentage of cytosines in animal genomic DNA that are methylated?

What is the approximate percentage of cytosines in animal genomic DNA that are methylated?

What is the approximate percentage of cytosines in animal genomic DNA that are methylated?

▸ 0.5–1%

▸ 1.5–3%

▸ 2–7%

▸ 6–9%

▸ 12–16%

Dante52   33   1 Reply

elisebarnett

The concept that epigenetic effects can be transmitted from parents to offspring is called ...

The concept that epigenetic effects can be transmitted from parents to offspring is called ...

The concept that epigenetic effects can be transmitted from parents to offspring is called ______________ epigenetics.

▸ inherited

▸ transgenerational

▸ heritable

▸ cross-generational

▸ vertically transmitted

vurt777   31   1 Reply

tk9790

Nucleation of heterochromatin begins:

Nucleation of heterochromatin begins:

[html]Nucleation of heterochromatin begins:

▸ at the same point(s) on both homologous chromosomes.

▸ from any of a number of random sites per chromosome.

▸ at a single random site per chromosome.

▸ from any of a number of specific sites per chrom

rafiki121   29   1 Reply

micp3537

In S. pombe, the formation of centromeric heterochromatin is accomplished by:

In S. pombe, the formation of centromeric heterochromatin is accomplished by:

[html]In S. pombe, the formation of centromeric heterochromatin is accomplished by:

▸ histone methylation followed by protein binding.

▸ nucleation from simple sequences.

▸ an RNAi-dependent pathway.

▸ nucleation from complex DNA sequences

Jennthejelly   37   1 Reply

mnnewman

True or False? Yeast GAL gene regulation includes both positive and negative control mechanisms.

True or False? Yeast GAL gene regulation includes both positive and negative control mechanisms.

True or False? Yeast GAL gene regulation includes both positive and negative control mechanisms.

▸ true

▸ false

Infinitez   36   1 Reply

ryan_navarro5

Which of the following is not a possible control point for eukaryotic gene expression?

Which of the following is not a possible control point for eukaryotic gene expression?

Which of the following is not a possible control point for eukaryotic gene expression?

▸ mRNA transport from nucleus to cyoplasm

▸ Protein modification

▸ Opening chromatin

▸ Transcript processing

▸ Degradation of mRNA

cacerami   41   1 Reply

rotatorro

Transcription factor TFIIIA, which is required for transcription of 5S rRNA genes, contains which of ...

Transcription factor TFIIIA, which is required for transcription of 5S rRNA genes, contains which of ...

[html]Transcription factor TFIIIA, which is required for transcription of 5S rRNA genes, contains which of the following DNA-binding domains?

▸ Leucine zipper

▸ Homeodomain

▸ Helix-loop-helix domain

▸ Zinc finger

▸ Steroid receptors[/

akempire   33   1 Reply

psstone42

The zinc-binding domain of a zinc finger is formed by which amino acid(s)?

The zinc-binding domain of a zinc finger is formed by which amino acid(s)?

The zinc-binding domain of a zinc finger is formed by which amino acid(s)?

▸ Arginine and histidine

▸ Arginine and cysteine

▸ Two cysteines

▸ Histidine and cysteine

▸ Cysteine and arginine

susu   46   1 Reply

EM81607

The function of histones may be modified by the addition of all except which one of the following?

The function of histones may be modified by the addition of all except which one of the following?

[html]The function of histones may be modified by the addition of all except which one of the following?

▸ Amino groups

▸ Acetyl groups

▸ Methyl groups

▸ Phosphate groups

▸ Histones may be modified by acetyl, amino, methyl, or phosphate g

theroyalty   39   1 Reply

billykra

Hormones function as ligands to activate which DNA binding domains?

Hormones function as ligands to activate which DNA binding domains?

Hormones function as ligands to activate which DNA binding domains?

▸ Homeodomains

▸ Steroid receptors

▸ Leucine zippers

▸ Zinc fingers

▸ Helix-loop-helix domain

exteesy07   36   1 Reply

andrat

An architectural protein functions by:

An architectural protein functions by:

[html]An architectural protein functions by:

▸ binding to activators as a coactivator.

▸ preventing the binding of repressors.

▸ modifying histones.

▸ binding to DNA and causing it to bend.

▸ facilitating the assembly of transcription factors at

thenamehobbs   37   1 Reply

nancy123

An activator must have:

An activator must have:

[html]An activator must have:

▸ at least a DNA-binding domain.

▸ at least an activating domain.

▸ a coactivator-binding domain.

▸ both a DNA-binding domain and an activating domain.

▸ a DNA-binding domain, an activating domain, and a coactivator

ang359   31   1 Reply

kady_kelsey2

Acetylation of histones occurs on which of the following amino acids?

Acetylation of histones occurs on which of the following amino acids?

Acetylation of histones occurs on which of the following amino acids?

▸ Glutamine

▸ Arginine

▸ Lysine

▸ Asparagine

▸ Proline

alphalions   35   1 Reply

Marth6377

A DNA-binding motif that is characterized by its amphipathic nature is a:

A DNA-binding motif that is characterized by its amphipathic nature is a:

A DNA-binding motif that is characterized by its amphipathic nature is a:

▸ homeodomain.

▸ helix-turn-helix domain.

▸ helix-loop-helix domain.

▸ zinc finger.

▸ steroid receptor.

djchewinggum   40   1 Reply

rl679