Answer:
<h2>40</h2>
Explanation:
Calculations:
Let q²= homozygous recessive
p²= homozygous dominant
2 pq heterozygous
q² for this population is 640/1000 = 0.64
q = √o.64 = 0.8
so, P= 1- q
= 1- 0.8 = 0.2
The homozygous dominant frequency = p² = (0.2)(0.2) = 0.04
Therefore, you can expect 4% of 1000, or 40 individuals, to be homozygous dominant.
Answer:
B. Meiosis I
Explanation:
In meiosis I, it starts with a diploid cell with a homologous chromosome pair. The crossing of genetic material between chromosome pairs also occurs in this stage. The alleles containing the same trait would get separated so a new combination of alleles can be produced.
Answer:
Binary fission.
Explanation:
Reproduction may be defined as the process of production of the offspring to produce more of its own kind. Two main types of reproduction are sexual reproduction and asexual reproduction.
Asexual reproduction involves only one one parents and produce the offspring that has same genetic material. Binary fission is the main type of the cell division used by unicellular organism. The cell divide into two daughter cells with the same genetic constituents.
Thus, the answer is binary fission.
The endomembrane system<span> is a group of cell membranes and organelles that are mutually interconnected, either by being directly continuous with one another or by sending one another </span>vesicles<span>—little spheres of membrane then can bud off from one membrane and fuse with another.
</span>The rough endoplasmic reticulum<span> (</span>rough ER<span>) gets its name from the bumpy ribosomes attached to its cytoplasmic surface. As the ribosomes attached to the rough ER make proteins, they feed the newly forming protein chains into the lumen.
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The smooth endoplasmic reticulum<span> (</span>smooth ER) does not have ribosomes on its cytoplasmic face.<span>The smooth ER has a variety of functions, and its exact role may vary between cell types.
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<span>One role of the smooth ER is to produce lipids, including phospholipids, cholesterol, and steroids.
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