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The diagram shows a cell in meiosis.

  1. Label the appropriate structures with these terms: chromosomes (label as duplicated or unduplicated), centromere, kinetochore, sister chromatids, non-sister chromatids. Homologous pair (use a bracket when labeling), homolog (label each one), chiasma sister chromatid cohesion, and gene loci, labeling the alleles of the F and H genes.
  2. Describe the makeup of a haploid set and a diploid set.
  3. Identify the stage of meiosis shown.

Short Answer

Expert verified
  1. The metaphase of meiosis is labeled in the image.
  2. The diploid set denotes the complete set chromosome, and the haploid set indicates the single strand of a chromosome.
  3. Meiosis is the stage that is discussed in this question.

Step by step solution

01

Explanation of part “(a)”

The diagram is illustrated with appropriate labeling is shown below.

02

Step 2: Explanation of part “(b)”

A complete set of strands present in the chromosome is the haploid set.

The haploid set makes up the individual sister chromatid making up the entire chromosome. The diploid set is the complete chromosome given in the image.

03

Step 3: Explanation of part “(c)”

Meiosis is the process of separation of cells that results in the formation of four daughter cells. The other type of cell division is mitosis which slightly differs from meiosis.

The metaphase I stage of meiosis is illustrated in this image. The arrangement of the homologous chromosomes happens in the equatorial plate happens in this phase. The low plate is the center alignment of the chromosomes that are attached to the spindle fibers.

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Most popular questions from this chapter

Many species can reproduce either asexually or sexually. Explain what you think might be the evolutionary significance of the switch from asexual to sexual reproduction that occurs in some organisms when the environment becomes unfavorable.

Most of the yeast cells in the culture were in G1 of the cell cycle before being moved to the nutrient-poor medium. (a) How many femtograms of DNA are there in each yeast cell in G1? Estimate this value from the data in your graph. (b) How many femtograms of DNA should be present in each cell in G2? (See Concept 12.2 and Figure 12.6.) At the end of meiosis I (MI)? At the end of meiosis II (MII)? (See Figure 13.7.) (c) Using these values as a guideline, distinguish the different phases by inserting vertical dashed lines in the graph between phases and label each phase (G1, S, G2, MI, MII). You can figure out where to put the dividing lines based on what you know about the DNA content of each phase (see Figure 13.7). (d) Think carefully about the point where the line at the highest value begins to slope downward. What specific point of meiosis does this 鈥渃orner鈥 represent? What stage(s) correspond to the downward sloping line?

How does an asexually reproducing eukaryotic organism produce offspring that are genetically identical to each other and to their parents?

The diagram in question 6 represents just a few of the chromosomes of meiotic cells in a certain person. Assume the freckles gene is located at the locus marked F, and the hair color gene is located at the locus H, both on the long chromosome. The individual from whom this cell was taken has inherited different alleles for each gene ("freckles" and "black hair" from one parent, and "no freckles" in the gametes resulting from this meiotic event. (It will help if you draw out the rest of meiosis and label the alleles by name.) List other possible combinations of these alleles in this individual's gametes.

Meiosis II is similar to mitosis in that

  1. sister chromatids separate during anaphase
  2. DNA replicates before the division.
  3. the daughter cells are diploid.
  4. homologous chromosomes synapse
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