This may sound stupid - but what is leghaemoglobin??
A protein found in the root nodules of plants where nitrogen fixation takes place, it absorbs oxygen to make the conditions anaerobic.. which is needed for the enzyme nitrogen reductase to work, which allows the plant to fix nitrogen gas, the nitrates are needed for making amino acids.. etc
A protein found in the root nodules of plants where nitrogen fixation takes place, it absorbs oxygen to make the conditions anaerobic.. which is needed for the enzyme nitrogen reductase to work, which allows the plant to fix nitrogen gas, the nitrates are needed for making amino acids.. etc
I think this is a relatively simple question, but could someone explain to me what a transcription factor is? Is it something that causes something to start being transcribed?
Also, could someone just check I have this right .... Bivalent - Two homologous pairs of chromosomes, joined at chiasmata. Homologous chromosomes: Two chromatids (Is this the same as sister chromatids?)
A transcription factor is a protein that binds to a specific DNA sequence therby controlling transcritpion (DNA to mRNA) It performs its function by blocking or promoting the binding of RNA polymerase (which is the enzyme that helps add RNA bases to the template DNA strand to make the mRNA strand)
It also binds to a promotor region on the DNA, they transcritipiton factor therfore regulates the gene expression (that length of DNA)
Bivalent- correct and homologous chromosomes No they are NON sister chromatids, homologoues chromosomes are pairs of chromosomes which code for the same things but are not identical, i.e maternal and paternal chromosomes can be homologous X X
where the red is from mum and has an allele that codes for green eye colour and the black one is from dad and has an allele that codes for blue eye colour etc.
Where did you come across transcription factor in the book?
Anyone want to explain golden rice to me? I have no clue
rice is most popular crop in developing countries where people are poor and can't afford a proper diet - bare people go blind from vitamin A deficiency. they took phytoene synthetase from daffodils which converts precursor molecules into lycopene, and crt 1 enzyme from bacteria which converts lycopene to another molecule, then there area already enzymes present in the endosperm (rice grain) to convert that to beta-carotene beta carotene is a derivative of vit. A and therefore cures vit. A deficiency.
then a load of rubbish about rights and wrongs of genetic modification, lack of genetic variety if all countries grow this strain, unknown long term effects, etc.
A transcription factor is a protein that binds to a specific DNA sequence therby controlling transcritpion (DNA to mRNA) It performs its function by blocking or promoting the binding of RNA polymerase (which is the enzyme that helps add RNA bases to the template DNA strand to make the mRNA strand)
It also binds to a promotor region on the DNA, they transcritipiton factor therfore regulates the gene expression (that length of DNA)
Bivalent- correct and homologous chromosomes No they are NON sister chromatids, homologoues chromosomes are pairs of chromosomes which code for the same things but are not identical, i.e maternal and paternal chromosomes can be homologous X X
where the red is from mum and has an allele that codes for green eye colour and the black one is from dad and has an allele that codes for blue eye colour etc.
Where did you come across transcription factor in the book?
Ah right okay. I came across it in homeobox genes, so I'm guessing here it promotes the binding of RNA polymerase.
ah sorry, click on it again in a while and it should be sorted that happens sometimes on the upload site. Sorry about that. I'm missing 3 files too in the pack which I've also attached in this post.