This is the consequence of the exchange of genetic material called crossing over. It is known that diploid cells carry two versions of each gene, namely, two alleles. Meiosis results in haploid gametes with only one set of chromosomes. Crossing over occurs in meiosis where homologous chromosomes pair up and exchange different segments of the genetic material. So, although they are on the same chromosome, alleles for one trait will be exchanged, and for another will not. This results in chromosomes with new combinations of genes. Without crossing over, all traits on one chromosome will be inherited together, so a parent will produce gametes with only two different combinations and genetic variation will be significantly decreased.
Answer:
The correct answer is d) chopping meat and vegetables on the same cutting board.
Explanation:
There should be two different cutting boards for chopping meat and vegetable separately to prevent cross-contamination. Raw meat may have lots of pathogenic bacteria like S<em>almonella, Shigella, E.coli, Listeria,</em> etc which can contaminate the board and the vegetable which is cut on the same board.
So if you consume the contaminated food then you can get foodborne illnesses. Therefore separate board should be used for cutting veg and non-veg items and the board should be washed with soapy water after each use to wash the remaining bacteria from board. So the right answer is d.
Answer:
Glycocalyx
Explanation:
Glycocalyx is carbohydrate rich (glycoprotein + glycolipid) coating that is found in outer surface of cell membrane of many prokaryotic and eukaryotic cells specially bacteria.
Glycoprotein=Carbohydrate + Protein
Glycolipids= Carbohydrate + Lipids
Glycocalyx provied a barrier between cell and its surrounding, adhesion and provide protection in bacteria. In eukaryotes it can be used to identify cells.
<span>The importance of fluorescent markers lays in the fact that they mark different colors for different nucleotide bases and determine which is which. This distinguishes the nucleotides to assist in sequencing DNA.</span>
Answer:
Protein digestion begins when you first start chewing. There are two enzymes in your saliva called amylase and lipase. They mostly break down carbohydrates and fats. Once a protein source reaches your stomach, hydrochloric acid and enzymes called proteases break it down into smaller chains of amino acids.
Hope this helps :)