1. answered that before: he needs to know if the disorder occurs in the members of family (it would suggest genetic cause of a disease) or in housemates/colleagues from work (it would suggest environmental cause if sick people share the environment)
2. mutation is change in a DNA. ie. deletion of one or several nucleotides or substitution one nucleotide with another. and if substitution causes a situation when the new codon codes the same amino acid as the codon before mutation, then we see no effect of this mutation since peptide looks exactly the same.
3. definitely eye color (A) :)
Flowers are essential for sexual, not asexual, plant reproduction. Flowers have co-evolved with pollinators so as to attract them from one plant;s sexual apparati to another's, thereby transporting plant male reproductive cells (gametes) from one plant to another.
Duckweed performs photosynthesis. Photosynthesis produces oxygen. They take in carbon dioxide and produce oxygen. So, when it is kept in the light cycle it will produce oxygen which will get dissolved in the water.
But the flask with water does not contain dissolved oxygen. So, at the end of light cycle the flask containing the plant will have more DO.
Now, in dark the plant does not produce oxygen. Instead it uses it to break the glucose and produce carbon dioxide. While this is not the case with the flask without the weed.
So, the flask without the plant will have more DO then the flask with the plant.
So, at the end of light cycle the flask with the weed will have more oxygen while at the end of dark cycle the flask with water will have more DO.
Explanation:
Each chromosome pair consists of one chromosome inherited from the mother and one from the father. ... Arranged on the chromosomes are genes.
Answer:
virus spreads mainly between people who are in close contact with each other, typically within 1 metre. A person can be infected when aerosols or droplets containing the virus are inhaled or come directly into contact with the eyes, nose, or mouth.
Explanation:
This is the correct answer I hope this helps you out a little.
