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pogonyaev
2 years ago
15

HELP PLEASE! Why might a scientist repeat experiment if she did not make a mistake in the first one

Biology
1 answer:
trasher [3.6K]2 years ago
4 0

Answer:

i believe its B but i might be mistaken.

Explanation:

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Which of the following are possible causes of global warming? Check all that apply.
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Answer:

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Why must you use the same number of beads when you construct the second chromosome in Step 1?
Masteriza [31]
You should use the same amount of beads for both chromosomes because they need to match in size.
I am assuming you are making a pair of homologous chromosomes out of pop beads, and they should have the same size because they code the same information, the only difference between them is that one comes from the mother and ther other from the father. (Homologous chromossomes have the same genes in the same loci).
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Global warming is an international concern. It is the result of such things as overpopulation, deforestation, and ozone depletio
vlabodo [156]
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One of two identical structures that contain the DNA that make up a chromosome is the _________.
Amiraneli [1.4K]

Answer:

Chromatid

Explanation:

The chromosome is a (sort of) X shaped structure. A chromatid represents half of this structure, i.e. one "strand" of the structure.

A centromere is the point at which to sister chromatids are connected to form a single chromosome. The centromere is also where the spindle attaches to move chromosomes during mitosis

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7 0
2 years ago
Match the words below to the appropriate blanks to complete the sentences.
galben [10]

Answer:

  1. metaphase I

2. telophase II

3. anaphase I

4.prophase II

5. prophase I

6. anaphase II

7. telophase I

8. metaphase II

Explanation:

1. During _metaphase I________, pairs of homologous chromosomes align in the center of the cell.2. During _telophase II___, the separated chromatids elongate and (usually) cytokinesis occurs, formingfour genetically distinct haploid daughter cells.3. During _anaphase I_______, homologous chromosomes separate by moving with the spindle microtubulestoward the poles.4. During __prophase II______, a spindle apparatus forms and individual chromosomes (each composed ofsister chromatids) begin to move toward the center of the cell.5. During _prophase I_______, chiasmata form and crossing-over occurs.6. During _anaphase II_______, sister chromatids separate and move toward the poles.7. During __telophase I______, the separated chromosomes cluster at the poles of the spindle and cytokinesis occurs, forming two daughter cells, each with a haploid set of replicated chromosomes.8. During ___metaphase II_____, individual chromosomes (each composed of sister chromatids) align in the center of the cell.

3 0
2 years ago
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