Questions tagged [genetics]
Genetics is the branch of biology that deals with the transmission and variation of inherited characteristics.
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Ames Assay Confusion: Aren't the odds of spontaneous revertants too low to be able to accurately test the mutagenicity of certain compounds?
I am a student conducting a test with the Ames Assay. This assay uses a strain of bacteria that has a mutation in an amino acid synthesizing operon, which doesn't allow it to synthesize its protein. ...
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What is the exact definition of the term 'trait'?
A trait is a characteristic shown by an organism.
For example a Tt plant would show the 'tallness' trait.
It seems to me that, by analogy, sickle cell anaemia (SCA) carriers should show the 'normal' ...
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Can someone with albinism have red hair with very pale skin and blue eyes?
I have heard of a type of albinism that occurs in races with darker skin that can give people red hair, but in the pictures I've seen, they usually have reddish-brown hair, a medium skin tone, and ...
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Can hybrids from closely related species with similar chromosomes reproduce?
Let's say the plant Triticum monococcum which has 2 sets of 7 chromosomes when diploid and 1 set of 7 chromosomes when haploid has the genome AA. When interbred with a different species that has the ...
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Why is the codon size three, rather than four? [duplicate]
The genetic code consists of triplets, each of which (apart from the stop codons) yields an amino acid when the mRNA is translated.
But why did triplets evolve, rather than a longer or shorter codon ...
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Databases medicine and therapy - animal & human studies, technology readiness level
I am looking for some universal databases that would offer information about drugs and therapies currently in development.
The area of interest is mostly cell and gene therapy. I am looking for ...
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Inheritance of child behavior based on daily life experiences of the parent
Our brain is a large network of neurons connected with each other.Our daily experiences change how our neurons are connected.Some experiences create better connections between two neurons A and B and ...
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How to disambiguate between chromosome and chromosome pair?
Our genetic information is stored in 23 pairs of chromosomes that vary widely in size and shape. Chromosome 1 is the largest and is over three times bigger than chromosome 22.
Source: https://www.ncbi....
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Calculating pitch of B-DNA
From this question (How pitch of a DNA Helix is 3.4 nm?), I've learnt that for counting the number of axial rise for 10 base pairs in 1 helical turn to measure the pitch of B-DNA, we have to include ...
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How does positional memory in fibroblast cells work?
I have a question regarding how positional memory in fibroblasts work, specifically, where the memory comes from/how its made.
For example, the Salamander & other amphibians are able to regenerate ...
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What exactly is "Whole-genome sequencing"?
Newbie question: For few years I have seen news like “Whole-genome sequencing” is now under $1000 etc. I believed that this means all the base pairs of all chromatids in a single cell are identified ...
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What do alleles look like visually on linear DNA strands?
I've seen many textbook images of alleles on homologous chromosomes with the gene loci identified but how could this be visualised on linear DNA sequences with the bases written out? Is it that you ...
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What is a good expression vector for Salmonella enterica subsp. enterica serovar typhimurium
I am interested in expressing custom proteins in a Salmonella strain, however I am facing difficulties in finding the appropriate expression vector for it. It seems that most of the resources provide ...
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Considering Two Genes, Are There Only Two Possible Outcomes for the Four Gametes Produced After Meiosis, Regardless of Independent Assortment?
Is it true that for a single meiotic event when considering only two genes, there are only two possible genetic outcomes among the four gametes produced, regardless of whether the two genes are found ...
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Mitochondrial diseases inheritance
I've read information about mito genes inheritance but some parts are still obscure for me.
Here is the context:
Mother has a son that is affected by some mitochondrial disease and a healthy daughter. ...
