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vladimir1956 [14]
3 years ago
8

Why can males only have a y-linked trait?

Biology
1 answer:
elena-s [515]3 years ago
6 0

Answer:

Because males' cells have only one copy of the Y-chromosome

Explanation:

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In an earthworm is the dorsal blood vessel or the ventral blood vessel larger?
olasank [31]

Answer:

Dorsal lol, its contracts and pumps blood to the aortic arches.

6 0
3 years ago
Mitosis is a type of cell division. organize the images below to show the steps of mitosis.
barxatty [35]

Answer:    

The correct order is F, E, C, G, H, A, D, and B (look at the image in the attached files)

Explanation:

  • <u>Interphase</u><u>:</u> Stages G1, S, and G2. At this point probably, the chromatin duplication has already occurred, but it is still lax or dispersed. It has not condensed yet. Two pairs of centrioles are outside the nucleus (FIGURE F)  
  • <u>Prophase</u>: Centrioles move forward to the opposite poles of the cell. Chromatin is condensed and individual chromosomes are now visible. The nuclear membrane breaks into many pieces. Spindle apparatus -microtubules- forms. (FIGURE E)
  • <u>Metaphase:</u> The polar and the kinetochore fibers drive each individual chromosome to the equatorial plane. This stage ends when all the chromosomes are completely arranged in the medial area.  (FIGURE C)
  • <u>Anaphase</u>: Sister chromatids separate and move to the opposite poles of the cells, driven by the microtubules. In each pole, there are a pair of centrioles (FIGURE G and H).
  • <u>Telophase</u>: The nuclear membrane rearranges. Each sister chromatid becomes now a new chromosome. There is a pair of centrioles outside each of the nuclei. (FIGURE A)
  • Cytokinesis occurs at the end of the cell division. The rest of the cell is divided into two new daughter cells. Each daughter cell is an identical copy of the other cell, with the exact same genetic material (FIGURE D).
  • Decondensation of the genetic material of each new cell (FIGURE B).

5 0
2 years ago
In a(n) _________________________________, one of the blood vessels in the brain ruptures or breaks open and blood enters the br
lianna [129]

Answer:

Hemorrhagic Cerebrovascular accident (CVA) also called stroke

Also an aneurysm can rupture and cause same effect.

3 0
3 years ago
Shortest time period in the life cycle of a cell?
Effectus [21]

Answer:

Mitosis

Explanation:

Most of the time, our cells are in interphase and G1 and G2

4 0
3 years ago
Read 2 more answers
Please help !!!!!!!20 minutes
Gala2k [10]

That would be erosion. I know this because i spent years studying rocks and had straight passed all of it. Hope this helps. ;)

4 0
3 years ago
Read 2 more answers
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