Histone proteins can be chemically modified by addition of a methyl group. As a result, nucleosomes load _________ and also the process of ___________ is diminished at those DNA sites.
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A woman is homozygous for an abnormal gene on Chromosome 2 the codes for an autosomal leading disease. This means that she:
Will have the disease! The disease would be expressed with a solitary copy of the mutant in an autosomal dominant disease, but two duplicates (homozygous) would mean that every her youngsters would inherit the disease as well.
A man and a woman, BOTH through the blood form O, have four children. What will certainly be the blood varieties of your children?
100% kind O. To have an O blood type, you have to be homozygous for O. Both parents would have only the O gene to happen onto your children and thus all kids would have form O blood together well.
A couple has six children, 4 girls and two boys, all of whom have prominent chin dimples. If just the mother has a influential chin dimple, what is the most likely inheritance pattern because that chin dimples?
Autosomal dominant. If just one parent has actually a trait and then every the kids have the trait, the trait should be dominant. Over there was only one dominant pattern listed.
a. Eco-friendly stimuli control gene expression.b. Accessibility to the promoter an ar of a gene through transcription components is affected.*c. The DNA succession is permanently altered. This is a false explain that would be introduce to a mutation.d. Gene expression is affected by chemical modifications of the DNA and/or histone proteins.
is as result of a mutation in the opsin gene. The opsin gene is offered for the production of the photoreceptor proteins that permit us come see and distinguish light. A mutation in the gene can lead to an inability to distinguish red light and also green light.
The LCT gene codes for Lactase, i beg your pardon is responsible because that the failure of lactose. I beg your pardon of the complying with statements could explain just how Lactase task is increased?
The visibility of lactose reasons nucleosomes come separate, exposing the LCT gene. As soon as the nucleosomes separate, this provides the unbound area easily accessible for gene expression.
Histone proteins have the right to be chemically modified by addition of a methyl group. Together a result, nucleosomes fill _________ and also the procedure of ___________ is reduced at those DNA sites.
tightly, transcription...Methylated nucleosomes pack an ext tightly together, not much more loosely, making your wound DNA less available for transcription within the nucleus; translate into occurs exterior the nucleus.
Distortion that the dual helix structure occurs since of uncomplimentary pairing that the nucleotides. Remember the the DNA double helix retains its shape because of the pairing that A through T and also G with C.Feedback
Which that the following would be considered a allude mutation come a DNA strand that is composed of a nucleotide sequence: 5" CTG ACG TAT CTT AAT 3"
a. 5" CTG ACG TAT TCT TAA T 3"b. 5" CTG ACG TAT TTA in ~ 3"c. 5" CTG ACG TAT CTT AAT 3"d. 5" CTG ACG TAA CTT AAT 3" Correct5" CTG ACG TAA CTT AAT 3"
a. Synthetic of one RNA primerb. Acknowledgment of the damaged. Ligation to reclaim continuity the the DNA backbone
TRH is a very tiny molecule - three amino acids long-- the helps manage the lot of thyroid hormone produced by the thyroid gland. Although that is a small polypeptide, the mRNA the is produced during transcription of the TRH gene is actually many, numerous nucleotides much longer than the ripe nucleotides that would be compelled for a 3 amino acid polypeptide. What might reasonably define why the actual mRNA produced during warrior is so much much longer than the minimum nine nucleotides compelled to password for the three amino acids?
Introns are removed from the mRNA after warrior of the gene occurs. The remove of introns occurs in post-transcriptional processing and short the length of the mRNA strand.
Following transcription, what would be the result mRNA succession from this layout strand:5"-ACA GCT GTC-3"
A person with at the very least one normal X chromosome there is no the hemophilia gene will not present signs the hemophiliaAffected men pass X-linked problems onto daughters, not sons because they just pass the Y-chromosome on come sons.
First, the DNA double helix is denatured. The annealing of the DNA primers follows this step. Finally, the primers are expanded by DNA polymerase in a procedure referred to as elongation.
The DNA succession 3"-ATGATCCTT-5" is component of the theme strand throughout DNA replication. I m sorry of the following would it is in the correct sequence because that the freshly made DNA?
*RNA is solitary stranded and contains a ribose sugar in the sugar-phosphate backbone.*RNA nucleotides include the bases A, U, C, and also G.*There are several varieties of RNA in the cell, including mRNA, rRNA, and tRNA.
5"- GGG AGC CCG AAT -3Remember the the security sequence will be based on base pairing for DNA, so the A will certainly pair through T, C v G, and also so on, in the complementary sequence. The exactly answer is 5"- GGG AGC CCG AAT -3", when written in the conventional way starting through the 5" finish of the strand.
A study scientist is do the efforts to produce a brand-new strain the bacteria that can develop a protein necessary for she research. I beg your pardon of the molecules will certainly act as a design template in producing the protein?
Splicing is the procedure of removing introns and also connecting the exons of a gene. The is an essential part of mRNA processing before the leave of mRNA indigenous the nucleus because that translation.. 5" cap enhancement and poly(A) tail addition are also part of mRNA processing that happen at the beginning and end the transcription, respectively.
DNA sequences near the start of a gene that are known by transcription determinants which recruit RNA polymerase to that gene for expression. This is critical aspect of transcription
DNA replication is ___________, which permits each of the two strands to offer as a _______ for the brand-new strands.
semiconservative, template....DNA replication is semiconservative, definition that each new duplex has actually one original (parent) strand and also one new strand. Because the 2 parent strands space separated throughout replication and also the basic pairing is predictable, each parental strand can serve as a template for the new strand synthesis.
RNA primers room made in ~ the start of DNA replication to permit the DNA polymerase to bind and also begin making the brand-new DNA strand.
Several contents of tobacco smoke, consisting of benzopyrene, insert themselves (intercalate) right into the DNA and lead come several varieties of mutations such together frameshift mutations, including both insertions and deletion. I m sorry of the adhering to repair pathways would be supplied to fix this type of damage?
Nucleotide excision repair is provided to fix deletions, insertions, and helix-distorting lesions, such as thymine dimers.
is a specialized version the nucleotide excision repair, that is only supplied to repair mismatched nucleotides following DNA replication - not damaged DNA.
are modifications to genomic framework (not sequence) the are resulted in by the external environment. These eco-friendly factors influence the as whole chromatin framework to allow much more or less "access" to the DNA by gene expression machinery to turn the genes "on" or "off". In various other words, epigenetics can alter gene expression without changing the underlying DNA sequences. The alters may or may not it is in heritable, depending upon the location and circumstances.
The gene that create the A and B antigen proteins have the right to both it is in expressed independently, and also a heterozygote (someone with both genes) will certainly be create both A and B protein - neither will conquer the other.
What is the supposed probability that a child will have an autosomal dominant condition if your father is heterozygous for the allele and their mommy is homozygous because that the typical allele?
If D is the disease-conferring dominant allele and d is the normal allele, the father has the genotype Dd and the mother"s genotype is dd. Every child can only inherit a d allele from your mother, and also they have a 50% opportunity of inheriting the D allele from your father. As a result, the meant probability the their kid will inherit the condition is 50%.
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Transcription of DNA come RNA takes location in the cell nucleus of eukaryotic bio cells.RNA polymerase is come "read" the theme strand that DNA and create the new RNA transcript by bonding together individual RNA nucleotides that room complementary come the DNA template. Synthetic of a new RNA molecule is a multi-step process, which contains locating the transcription start site, separating a part of the double-stranded DNA, and also initiating RNA synthesis.