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aliina [53]
3 years ago
13

Plz help ............. I have a test on this tomorrow

Biology
1 answer:
salantis [7]3 years ago
8 0
2.Uniformitarianism is events and catastrophism is changes. 3.relative dating is the age of rocks and geologic features compared with other rocks and features nearby and absolute age is to mean the numerical age. 4. The decay is the process by which an unstable element naturally changes into another element that is stable and dating is one important radioactive isotope used for dating. 5. Superposition is rock layers at the bottom and crosscutting relationship is a rock layer going though another rock layer
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Place the events in the correct order:
Alecsey [184]

Answer:

1. Chromatin condense into chromosomes.

4. Homologous chromosomes pair up (formation of tetrads).

5. Homologous chromosomes separate and move to poles.

2. Sister chromatids separate.

3. Chromosomes unravel in to chromatin.

Explanation:

This question portrays the process of meiosis in a cell. The ordered sequence of events in the options are:

1. Chromatin condense into chromosomes - This process occurs in the Prophase stage. Prior to the cell division, the nuclear material is found as Chromatin material. This Chromatin material then undergoes condensation to form visible chromosomes.

4. Homologous chromosomes pair up (formation of tetrads) - This process also occurs during the Prophase stage of meiosis I. In this stage, homologous chromosomes (similar but non-identical chromosomes received from each parent) are paired up side by side to form a structure known as TETRAD or BIVALENT.

5. Homologous chromosomes separate and move to poles - This process characterizes the Anaphase stage of meiosis I. Homologous chromosomes are pulled apart to opposite poles of the cell by spindle microtubules.

2. Sister chromatids separate - After meiosis I, meiosis II involving sister chromatids instead of homologous chromosomes follows. In the Anaphase stage of meiosis II specifically, sister chromatids are pulled apart towards opposite poles of the cell.

3. Chromosomes unravel in to chromatin - After the whole division process i.e. karyokinesis (division of the nuclear material), the chromosomes begin to unravel to form the CHROMATIN threads once again. This process occurs in the Telophase stage of meiosis.

5 0
3 years ago
In AB blood, the A and the B alleles have?
Rina8888 [55]

Answer:

In AB blood, the A and the B alleles have?

Explanation:

They have codominance.

4 0
3 years ago
Why would a shark need to regulate its internal salt concentration?
expeople1 [14]
Osmosis. If the cell has too much salt the cells will swell. let me know if you want me to explain.
7 0
4 years ago
Is acid rain causing a decline of frog population? (variables/scientific method)
Oksi-84 [34.3K]
Yes. Acid rain destroys frog’s and tadpoles’ (young frogs) habitat of lakes and depletes oxygen supply in the lakes.
6 0
3 years ago
Just need the asnwers for 7-11. Brainliest and 20 points for the help!
andrezito [222]

Answer:

7 cat and lion

8. animalia chordata and mammalia

9 mammalia

10 chordata

11 <em>Felis domesticus</em>

<em>Felis concolor</em>

<em>Canis familiaris</em>

<em>Hom0 sapiens</em>

<em>have to change the o to a 0 to get them to accept the answer</em>

Explanation:

3 0
3 years ago
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