Answer:
Explanation:
Proteins and Nucleic Acids are not similar in structure. They look nothing alike, either as large molecules or in terms of their building blocks. While they're both made up of mostly carbon, hydrogen, nitrogen, and oxygen, the elements are assembled in vastly different ways. The major relationship between the two has to do with protein production -- DNA contains the information that a cell uses, with the help of RNA, to make protein.
Scientists
can also glimpse the awful effects of Alzheimer's disease when they look at
brain tissue beneath the microscope:
Alzheimer's tissue has numerous fewer nerve
cells and synapses than a well brain.
<span>
<span>Plaques, unusual
clusters of protein particle, which are construct up between nerve cells.</span>
</span>
<span>
<span><span>Dead and dying nerve cells contain tangles,</span> which
are produce of twisted strands of a further protein.</span>
</span>
<span>Scientists
are not absolutely sure what causes cell death and tissue deficiency in the
Alzheimer's brain, but plaques and tangles are key suspects.</span>
1. meiosis II is quite similar to mitosis, in that the sister chromosomes are split during anaphase II in both processes
2. the stages of cell division (prophase, metaphase, anaphase, and telophase) are practically the same in both meiosis and mitosis - there are only a couple of tiny differences between them
E.3/16
Vg: normal wings; vg: vestigial wings
Bt: normal wings, bt: bent wings
But to simplify, I write:
V: normal wing; v: vestigial wing
B: normal wings; b: bent wings
P: VvBb x VvBb
Gametes (both) VB, Vb, vB, vb
F1 (Punnett Square)
.....|.... VB...|...Vb...|...vB...|..vb
VB | VVBB | VVBb | VvBB | VvBb
Vb | VVBb .| VVbb | VvBb | Vvbb
vB | VvBB ..| VvBb | vvBB | vvBb
vb | VvBb ..| Vvbb. | vvBb | vvbb
Phenotypic ratio: 9/16 V-B- (normal) : 3/16 V-bb (bent) : 3/16 vvB- (vestigial) : 1/16 vvbb (vestigial-bent)
