Put the following steps in order for meiosis and the preceding interphase in a female. hint: for each step, determine whether it is in g1, s g2, prophase 1, prophase 2, metaphase 1, metaphase, 2, anaphase 1, anaphase 2, telophase 1, telophase 2, after the first cytokinesis or after the second cytokinesis. question 2 options: sister chromatids are created here 2 x chromosome sisters move in opposite directions on the spindle an x chromosome appears in which the 2 sisters have different alleles a cell exists with one x chromosome that has 2 attached sisters the 2 x chromosomes pair

Question 1. The steps  occur in the following order:

INTERPHASE

1. G1

2. S

3. G2

MEIOSIS I

4. Prophase 1

5. Metaphase 1

6. Anaphase 1

7. Telophase 1

8. First Cytokinesis

MEIOSIS II

9. Prophase 2

10. Metaphase 2

11. Anaphase 2

12. Telophase 2

13. Second cytokinesis

Question 2

Sister chromatids are created here  (interphase)

The 2 X chromosomes pair (prophase 1)

A cell exists with one X chromosome that has 2 attached sisters (prophase 1)

An X chromosome appears in which the 2 sisters have different alleles  (prophase 1)

2 X chromosome sisters move in opposite directions on the spindle (anaphase1)

Explanation:

During interphase the cell prepares to divide. During meiosis 1 Homologous chromosomes are segregated and the ploidia is reduced from diploid to haploid in a reductive division where the sister chromatids are held together. Unlike meiosis I, meiosis II is an "equational" division analogous to mitosis where sister chromatids are secreted creating four haploid cells.

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

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