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sweet [91]
3 years ago
11

Question 4 of 10

Biology
1 answer:
TiliK225 [7]3 years ago
5 0

They separate during meiosis I is true of tetrads.

Explanation:

In Prophase 1, tetrads are formed. Each chromosome has two sister chromatids. When two homologous chromosomes align for crossing over they have four parts and these are termed tetrads.

When homologous chromosome separate tetrads get broken. Tetrads are not present in mitosis because no crossing over takes place in mitosis.

In Anaphase 1 homologous chromosome separate by getting pulled by spindle fibres forming two haploid cells and tetrads get separate.

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Fossils may be:
Andru [333]

Answer:

The correct answer is option (e)-"All of the answer choices are correct".

Explanation:

Fossils are defined as the remains of ancient organisms. Fossils are obtained from impressions left after an organism decays. There are different kinds of fossils depending on the material they are made of and how they were formed. Some fossils are made from minerals that are the replacement of the organic matter of the ancient organism, or are the replacement of mud that came from footprints. Alternatively, fossils could be plant resins or tar that preserved a specimen within.

7 0
3 years ago
Which epidermal layer is closest to a blood supply.
Ede4ka [16]

Answer:

Stratum Basale

Explanation:

It is the layer that's closest to the blood supply lying underneath the epidermis.

4 0
2 years ago
Using the idea of concentration gradient explain why the purple colour of potassium permaganate gradually spreads throughout the
NNADVOKAT [17]

The purple color of potassium permanganate gradually spreads throughout the water in the jar by the process of diffusion.

  • Diffusion is the process of movement of a substance from the region of higher concentration to the regions of lower concentration. Diffusion occurs in liquids as well as gases.
  • Potassium permanganate is a purple color compound, when it is added in a jar of water it spreads throughout the water by the virtue of diffusion.
  • The concentration of potassium permanganate is higher at one point and the other regions in the jar have its nil or low concentrations initially, this leads to the set up of a concentration gradient.
  • As time passes diffusion occurs and the particles of potassium permanganate keep on migrating to the regions of low concentration until the concentration is uniform throughout the jar. Ultimately, it spread throughout the jar making the water purple.

Know more about diffusion

brainly.com/question/14852229

#SPJ4

3 0
2 years ago
Describe two characteristics shared by ecosystems that have high biodiversity (DESCRIBE)
svet-max [94.6K]

they deleted my link but if u google this theres a pdf that should help

5 0
3 years ago
Suggest one reason why the population of the woodland caribou has declined in the united states?
schepotkina [342]
Well its most likely over hunted but if its endangered and not allowed to be hunted then it would be because of natural predators in the area being over populated and taking out the caribou to fast
7 0
3 years ago
Read 2 more answers
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