Categories
Ask Biology

Is this may-flowering grass an Echinochloa (barnyard grass)?

There’s a grass growing in my thyme pot on my balcony, that’s currently flowering (end of May, Paris region, France, southern exposure, windy conditions), and I’m wondering what species it is: Here are a picture where details of the flower and leaves may be more visible: I tried to search using my old determination key […]

Categories
Ask Biology

Is hair made of protein or dead cells or both?

Some sources say hair is made of dead cells: it’s mentioned in many titles of Google searches, so I’m linking the Google search search Other sources say hair is a protein filament: Protein filament that grows from follicles found in the dermis, or skin I don’t think protein and dead cells are the same thing. […]

Categories
Ask Biology

what are introns in mitochondria genome?

i am studying about mitochondria genome and it is mentioned that there are introns. however, these introns encode for proteins. I cannot really understand this. Could someone tell me what intron in mitochondria genome refers to?

Categories
Ask Biology

Does the process of making a sourdough starter involve Darwinian selection?

In essence – to make a sourdough starter: Put flour and water in a jar, and leave it in a warm place overnight Divide the remaining mixture in half, throw out half, add half as much flour and water again. Repeat for 7 days. I don’t see why you couldn’t just add all the ingredients […]

Categories
Ask Biology

When is it viable to remove old graves?

Societal considerations aside, when all the remaining relatives of a particular gravesite have all disappeared or forgotten about a certain grave, is it viable/hygienic to remove or repurpose old gravesites as something new? Not all burial traditions use airtight coffins that wouldn’t let the body decompose — Muslim burial tradition would wrap the body in […]

Categories
Ask Biology

Regarding different nucleotides on a DNA strand

I am not a biologist therefore, it might seem as an elementary question. I retrieved rodent sequences from UTR database: http://utrdb.ba.itb.cnr.it And I know there are supposed to be four nucleotides namely: A,G,C, and T. However, on this database I get sequences that have ‘n’ nucleotide in several locations, ‘m’ and ‘k’ as well. What […]

Categories
Ask Biology

MEME’s motifs have an E-vaue too high

I’m currently learning how to use MEME-Suite (web tool) to find a specific known transcriptor binding site in the promoter region of 5 putative bacterial genes of interest, but the results obtained with just the five promtoer sequences have an E-value too high. What can I do to improve these results? Can I use as […]

Categories
Ask Biology

Which beetle is this?

I’m curious to find out what kind of beetle this is. Google lens search suggested a type of longhorn beetle, but I am not convinced. The photo is taken in Karnataka, in India Thanks!!

Categories
Ask Biology

Which beetle is this?

I’m curious to find out what kind of beetle this is. Google lens search suggested a type of longhorn beetle, but I am not convinced. The photo is taken in Karnataka, in India Thanks!!

Categories
Ask Biology

Which beetle is this?

I’m curious to find out what kind of beetle this is. Google lens search suggested a type of longhorn beetle, but I am not convinced. The photo is taken in Karnataka, in India Thanks!!