408 Answered Questions for the topic genetics
Biology Genetics - Inheritance Question
assume that ischemic heart disease is conveyed by homozygous recessive alleles, hh, at a single locus. Individuals with at least one copy of the dominant allele H have normal blood vessels. Dwayne... more
BIOLOGY DNA QUESTION
for the following mRNA with the seq 5' AUGCGGUACAGCUUAGC 3' what is the originating genomic DNA template strand? I said GCUAAGCUGUACGCUA. is this correct or should the U be replaced with T?Thank you. more
Number of nucleotides in 300 amino acids
A protein is 300 amino acids long. Which of the following could be the number of nucleotides in the section of DNA that codes for this protein? (Remember: DNA is double-stranded.)I know the answer... more
Explain mechanism that could cause methylated histone proteins to pack tightly together while causing acetylated histones to pack together very loosely
Can you propose a potential explanation for a mechanism that could cause methylated histone proteins to pack tightly together, inhibiting gene transcription, while causing acetylated histones to... more
If tryptophan were to serve to decrease gene expression, how could it interact with a repressor, and an activator, respectively, to mediate this decrease in trp operon expression?
In this scenario, which of these two transcription factors would be inherently capable of binding the DNA operator, and which needs help from tryptophan?
Why do a Punnett square and dominance/recessiveness not make any sense for bacteria?
What are human genetic traits that are easily observed?
Genetics Gene Therapy
Gene therapy and mutation question
Dominant mutations can be categorized according to whether they increase or decrease the overall activity of a gene or gene product. Although a loss-of-function mutation (a mutation that... more
Mendel’s principle of independent assortment says that the genes controlling different traits are inherited independently of one another. Today, we know that is ONLY true when
a mutation causes abnormal cell division.the traits are both recessive.the traits are located on the same chromosome.the traits are located on different chromosomes.the trait occurs on the X or Y... more
health issue in pakistan
a lot of health issue in Pakistan silent killer called hypertension, rate of hypertension increase day by day which are the root of cardiovascular disease how we control hypertension?
How does the polymerase protein know which gene to express?
I am not asking where the DNA or RNA polymerase starts to transcribe a gene. I want to know how does the polymerase know WHICH of thousands of genes on multiple chromsomes to pick at any one... more
How does the structure of dna determine the structure of proteins.
What DNA does a self-fertile plant's seedling have?
Some plants are said to be `self-fertile`. An example is `Prunus tomentosa`. Assuming that no cross-pollination happened with other plants, if a self-fertile plant such as `prunus tomentosa`... more
Plants that are siblings: How does this impact pollination?
A friend has two cherry bushes (prunus tomentosa). Prunus tomentosa is said to be partially self-fertile, but benefits from cross-pollination. The two cherry bushes set fruit, and so my friend... more
Horizontal Gene Transfer?
I understand the different ways bacteria can undergo horizontal gene transfer (transformation, transduction (phages), conjugation (plasmids)). Is there an experimental method to tell how a... more
Why is mRNA needed in the Protein translation?
The original question was to predict the basic requirements for information storage. Then the discussion moved to why is it necessary to include mRNA in the protein translation process. Why can't... more
What are the different ways an exon gets spliced?
Exons are produced by more than one mechanism, e.g. splicing out introns after transcription, if I remember correctly. Please list all mechanisms.
What is immunoprecipitation?
Immunoprecipitation is a very common lab technique used to study cells. What is it, what does it do, and how?
What is the difference between gene silencing in plants vs animals?
One way cells can control gene expression is by silencing specific genes. Gene silencing is a cellular mechanism that occurs in both plants and animals that results in the silencing of the specific... more
What are limiting factors for intron length?
For predicting genes from a sequenced genome, you need to set a maximum intron length. How long can introns get in animals? Is there some limit?
Why is an allele dominant or recessive?
Alleles refer to duplicate genes, where one allele can be dominant over the other. What makes an allele dominant or recessive, given that both code for a single protein?.
Why does polyploidy give an evolutionary advantage?
I would like to know what advantages polyploidy holds. I have come across a few examples during my research of polyploidy, for example human adults' hearts contain 27% diploid, 71% tetraploid and... more
Why is polyploidy much more common in plants than in animals?
There are very few animals with polyploidy like salamanders. Why is it that polyploidy is so uncommon in animals? On the other hand there are numerous examples of polyploid plants. If ut something... more
Do transcription factors bind to both strands of DNA?
Do transcription factors (or generally proteins) bind to only single strand of DNA or both strands? Since it can have non covalent bonds to both strands in theory. I would like to know the... more