Question

How would you describe the genetic contents of a germ line cells just entering the meiotic stages after gap 2? haploid, double stranded chromosomes haploid, single stranded chromosomes diploid, double stranded chromosomes O diploid, single stranded chromosomes

Answer 1

Third option

Ploidy 2n Amount of DNA 2c 2n 2n 2c to 40 4C 2n 4c 2n 4c 2n 4c Stage Description G1 Cell grows in size, duplicates its organelles and cytoplasm S DNA replication G2 Cell grows in size, duplicates its organelles and cytoplasm, forms RNA and proteins Prophase 1 Crossing over occurs between non sister chromatids of homologous chromosomes, nuclear envelope is absent Metaphase 1 Alignment of homologous chromosomes at double equatorial plate Anaphase 1 Separation of homologous chromosomes and movement towards the opposite poles of the cell Telophase 1/cytokinesis Reappearance of nuclear 2 envelope, decondensation of chromosomes into chromatin Prophase 2 Disintegration of nuclear envelope, condensation of chromosomes Metaphase 2 Alignment of chromosomes at equatorial plate Anaphase 2 Separation of sister chromatids and movement towards the opposite poles of the cell Telophase 2/cytokinesis Reappearance of nuclear 2 envelope, decondensation of chromosomes into chromatin n 2c n 2c n 2c n 2c n с STAGES OF MEIOSIS

a) 2n = 6 prophase metaphases 888 88% Rokoko Goal 299 T2 A2 ᎣᎣᎣᎣᎣᎣ 888888 anaphase) cell me abrane V V V V V V 888888 nuclea membrane telophase M1 P1 2010 do b) WM cm 888 M25 REB T1 P2 nm

A part shows mitosis.

B part shows meiosis.

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