498 Answered Questions for the topic genetics

04/19/19

What is the number of DNA strands per cell?
I wonder if each cell possess only one strand of DNA which according to my book is more than "7 feet" long(if uncoiled), then why does human has 46 chromosomes which are actually coiled chromatin... more
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04/18/19

A photosynthesizing mouse?
N. Shubin's *Your Inner Fish* makes the point several times that there is a lot of functional similarity between some seemingly remote gene cousins. If that needed reinforcing we have the... more
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04/17/19

Choose the all the types of RNAs and their functions in translation.
A. rRNAs are templates that provide coding information to form proteinsB. rRNAs are ribozymes that catalyze the addition of amino acidsC. mRNAs are adaptor molecules that contain amino acidsD.... more
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04/17/19

From the following list, choose all the parts that are present in an mRNA that is ready to be translated.
A. Promoter SequenceB. IntronsC. Untranslated regions (one at 5' one at 3')D. 5' capE. Poly(A) tailF. Exons
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04/17/19

What is the difference between a promoter and a start codon?
A. Promoters identify translation start sites on an mRNA while start codons are regions of DNA where transcription starts.B. Promoters are regions of DNA where transcription starts while start... more
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04/17/19

DNA is a double-stranded helix. Which strand is involved in transcription?
A. Coding strand (runs in the 3’ - 5’ direction)B. Template strand (runs in the 5’ - 3’ direction)C. Template strand (runs in the 3’ - 5’ direction)D. Leading strand (runs in the 3’ - 5’ direction)
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Genetics Science Biology

04/17/19

Genetics Question
Pea seeds can either be yellow (which is dominant) or green (which is recessive). What would the phenotype of a heterozygous individual be?a. yellowish greenb. greenc. yellow and greend. yellow
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Genetics Science Biology

04/16/19

Biology Genetics Question
In rats, black fur (B) is dominant to white fur (b). If you cross 2 heterzygous individuals (Bb) what would be the ratio of different phenotypes in the resulting offspring?a. all blackb. 1 black: 2... more
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04/13/19

Why don't all bacteria have F-plasmids by now?
Some bacteria can undergo gene transfer by conjugation. Conjugation is a form of horizontal gene transfer, meaning from one (unrelated) bacterium to another (in contrast to vertical gene transfer,... more
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Genetics

04/12/19

Does one parent transmit more DNA to the offspring than the other one?
Does one parent transmit more DNA to the offspring than the other one? Or do both parents always transmit the same amount of genetic material to their offspring? In other words, can a baby be... more
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Genetics

04/12/19

Do human cells contain only one copy of the genome?
Does each cell contain only a single copy of its genome? Or are there ever 'extra' copies present. **Reason behind question**: *Wondering whether gene mutations could be corrected by referencing... more
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Genetics Biology

04/12/19

What are the primary and secondary constrictions of a chromosome? What is the other name given to the secondary constriction?
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Genetics Mutations

04/11/19

Is it possible to have different genes in different parts of our body?
I want to understand genetic mutation specially in the context of multicellular organisms like humans.I studied biology only till high school and I can’t fully understand wikipedia pages on this... more
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Genetics Dna Bacteriology

04/11/19

What is the advantage of circular DNA in bacteria? ?
From what I understand, bacteria have circular DNA. What advantages does it have over linear strands like for eukaryotes? Do there exist bacteria with more than one ring of DNA?
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Genetics Biology

04/10/19

What structure maintains the binding of identical chromatids?
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04/10/19

A codon is a group of three bases that specifies a particular amino acid. Which of the following enzymes can ‘read’ codons on an mRNA?
a.DNA polymeraseb.Ribosomec.Primased.RNA polymerase 
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04/10/19

Where, on the mRNA coding for such a protein, would the ER signal sequence likely be located?
A. The signal sequence is not part of the mRNA and is added separately by an enzyme.B.Immediately before the stop codon.C. Anywhere in the mRNA.D.Immediately after the start codon.
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04/10/19

What is Mendelian Randomization, and how is it used to infer causality in epidemiology?
Studies of human traits and diseases are inherently confined to observational studies, known as epidemiological studies. This can make it very hard to determine what actually causes a particular... more
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04/10/19

Odd man out among the hereditary disease.
What is odd man out among cystic fibrosis , Klinefelter , Hutchinson disease and albinism? Mind that cystic fibrosis is a digestive disease
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Genetics Human Biology Twins

04/10/19

Do identical twins have the same fingerprint?
When there is every thing same from their genes to their phenotype so then why they don't have same fingerprints?
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04/09/19

Is HSV-vector-mediated miRNA expression in dorsal root ganglia stable?
My question is on the following article: "*[Reduction of voltage gated sodium channel protein in DRG by vector mediated miRNA reduces pain in rats with painful diabetic... more
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04/09/19

Is there a double helix RNA?
I wonder what is its function and if it can be the genetic material for a living organism. If not, why?
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04/04/19

Smallest viable reproducing population?
What is the smallest viable reproducing population, such as in a human population. By viable I mean a population which keeps genetic defects low (enough). A very strongly related question: what is... more
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Genetics Biology

04/04/19

How does XXY condition arise in humans?
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Genetics Hybridization

04/03/19

Is the discovery of dominant and recessive genes the only reason Mendel matters?
We've known that offspring inherit various traits from their parents since (at least) Aristotle. In The Elements of Plant Hybridization, [Gregor Mendel](https://en.wikipedia.org/wiki/Gregor_Mendel)... more
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