An animal has haploid number n = 7. In the table below, writethe quantity of eac

Question

An animal has haploid number n = 7. In the table below, writethe quantity of each item in a cell at the stated phase of meiosis.In some phases more than one cell is present. In those cases, writethe number of items in any one of these cells. Zero is a possiblecorrect answer.

Chromosomes in G1

Chromosome dyads in Prophase I

Chromatids in Prophase I

DNA double helices in Metaphase I

Tetrads in Metaphase I

Chromatids in Prophase II

Chromosome dyads in Prophase II

DNA double helices in Metaphase II

Tetrads in Metaphase II

Chromosomes after Telophase II

Homologous pairs of chromosomes in TelophaseII

Chromosomes in G1

Chromosome dyads in Prophase I

Chromatids in Prophase I

DNA double helices in Metaphase I

Tetrads in Metaphase I

Chromatids in Prophase II

Chromosome dyads in Prophase II

DNA double helices in Metaphase II

Tetrads in Metaphase II

Chromosomes after Telophase II

Homologous pairs of chromosomes in TelophaseII

Explanation / Answer

We know n = 7.So 2n = 14. Chromosomes in G1 phase = 14 as no replication occurs Chromsome dyads in prophase I = 14 dyads as replication ofchromosomes is over Chromatids in prophase I = 28 chromatids as one dyad has 2chromatids DNA double helices in metaphase I = 28 as reduction divisionhas not yet begun Tetrads in metaphase I = 7 tetrads[as one tetrad consists of 4chromatids] Chromatids in prophase II = 2 cells with 14 chromatidseach Chromosome dyads in prophae II = 2 cells with 7 dyadseach DNA double helices in metaphase II = 2 cells with 14 doublehelices each[as no.of double helices = no.of chromatids] Tetrads in metaphase II = 2 cells with 3 tetrads and one dyadeach Chromsomes after telophase II = 2 cells with 7 chromsomeseach Homologous pairs of chromsomes after telophase II = none or0. hope it helps

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