Answer:
<h2>(14+16)/1000 *100= 3</h2>
Explanation:
Parental combinations are always more common then other recombinant progenies.
A female fly is heterozygous for three X-linked genes crossed with an abc/Y male. . If single crossover occurs between a & b and between b & c, then the double cross is that, which occurs in both.
Double cross over progeny are always least in number, so here double cross occurs are in abC 14 and ABc 16.
So we are expecting that number of double cross over progeny= (14+16)/1000 *100= 3
Two mechanisms that must evolve in order to make multicellularity possible are:
• Specialization of the cells which reffers specialization in function(not all cells do exactly the same thing, otherwise they would just be a group of cells or a colony)
• Adhesion, communication and cooperation-requires that the cells coordinate their activities by sending signals to each other. They shoul work cooperatively to develop their multicellular "body".
<span>Lipids, mainly phospholipids, make up the bulk of the cell membrane. How is the structure of the phospholipid so perfectly paired to the function of the cell membrane? A) Phospholipids are bulky/large molecules that prevent all molecules from entering/exiting the cell. B) The polar tails of the phospholipids provide the barrier between the exterior/interior hydrophilic environments. C) Lipids contain high energy bonds, and these bonds help to provide the energy to move molecules across the membrane. D) The head of the phospholipid, which is hydrophilic, helps to control the movement of larg</span>
<u>Answer:</u>
<em>Six centromeres are observed in a prophase cell from an insect, there are </em><u><em>20 pairs of chromosomes present</em></u><em>. </em>
<u>Explanation:</u>
<em>Centromeres is defined as the part of the DNA</em> which are held responsible for the directional changing of chromosomes.
And these chromosome gets divided into <em>2 daughter cells while undergoing the process of mitosis and meiosis. </em>
<em>Chromosome is basically defined as a thin structure</em> as of a threadlike which is made out of nuclei acid and protein which is <em>located at the nucleus of various living cells</em>
