Identify the stage of mitosis where the sister chromatids line up on the equator of the cell.

Biology

2 answers:

N76 [4]3 years ago

5 0

Answer: Metaphase

Explanation:

The cell cycle is important for the proper growth and development of the cell. During mitosis when the nucleus starts diving, the chromatids that make up the chromosomes gets separated from each other and moves to the opposite poles of the cell.

During the metaphase, the spindle fibers attached to the centromere of each sister chromatids. the sister chromatids line upside on the equator, center of the cell.

Degger [83]3 years ago

3 0

B) Metaphase! (An easy way to remember this is M for metaphase = M in Middle)

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With independent assortment, the ratio of genotypes in the F2 generation of a cross between true-breeding strains (AA bb x aa BB

MariettaO [177]

Answer:

c. Aa Bb

Explanation:

The parents were pure breeding with genotypes AAbb and aaBB. A cross between AAbb and aaBB would produce AaBb genotypes in F1 progeny. Two F1 strains would be crossed to produce F2 progeny. The F2 progeny would have the genotype ratio= 1:2:1:2:4:2:1:2:1.

Out of all the obtained genotypes in the F2 generation, the proportion of "AaBb" genotype was 4/16. Therefore, "4" in the given ratio represents the genotype "AaBb".