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love history
7 days ago
5

Mendel’s law of segregation, as applied to the behavior of chromosomes in meiosis, means that:

Biology
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A diploid organism has 10 total chromosomes (2n=10). A cell from this organism has 5 total chromosomes and 10 double-helical DNA
enyata [2506]

In metaphase, anaphase and telophase of meiosis 2 before cytokinesis the condition prevails.

Explanation:

Meiosis is the cell division process that occurs in gamete precursor cells to create gametes. It's a reduction division since the progenitor cells are diploid while the gametes are haploid.

During meiotic division, the cells first go through DNA replication that doubles the DNA content of each chromosome.

Then, via meiosis I, the cell experiences reduction division, transforming the diploid cell into a haploid cell. Thus, a cell with 10 chromosomes becomes one with 5 chromosomes. However, the DNA amount per chromosome remains doubled. This is corrected by the second meiotic division, where each chromosome splits into chromatids with a standard DNA content.

So at each stage of meiosis II,

until cytokinesis occurs, the cells should remain in a haploid state with double the DNA content. [[TAG_45]]
7 0
2 months ago
The cheek smear slide is made by taking a q-tip or toothpick, rubbing it on the inside of your mouth (to remove cells) and then
Tresset [2298]

Answer:

The count of cells observed will rely on the dimensions of both the cells and the size of the red circle on the slide.

Explanation:

Cells come in varying sizes and this variation affects how many cells can be seen through a microscope. The way the smear is prepared also plays a role, as does the amount and type of dye used on the slide.

In conclusion, the number of cells visible is somewhat subjective and can only be definitively calculated through experience.

3 0
1 month ago
Freshwater ecosystems include three general categories: rivers and streams, lakes and ponds, and freshwater wetlands. Which of t
Rainbow [2354]

Answer:

A. The ecosystem absorbs significant rainfall, aiding in flood prevention.

C. At times throughout the year, water may either saturate the soil or remain just beneath its surface.

D. It might be classified as a freshwater bog, swamp, or marsh.

Explanation:

Answer B is the only one that stands out from the rest, as it directly pertains to a river.

3 0
3 months ago
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