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Chapter 13: 13-1TYU (page 268)

A human cell containing 22 autosomes and a Y chromosome is

  1. sperm
  2. an egg
  3. zygote
  4. a somatic cell of a male

Short Answer

Expert verified
  1. The option 鈥渟perm鈥� is true.
  2. The option 鈥渁n egg鈥� isfalse.
  3. The option鈥渮ygote鈥� is false.
  4. The option 鈥渁 somatic cell of a male鈥� is false.

Step by step solution

01

Description of autosomes and chromosomes

The normal chromosomes found in the cells are known as autosomes. The chromosomes that determine sex are known as sex chromosomes.

02

Explanation of option (A)

Twenty-two autosomes and Y chromosomes are present in the sperm. The sperm is the male gamete that fuses with the female ovum and donates the Y chromosome to the offspring.

The sperm is the gamete that contains the Y chromosomes.

Therefore, the given option is true.

03

Explanation of option (B)

The egg is the female gamete that gets fused by the sperm. Female gamete possesses the X sex chromosome in it.

The egg does not contain the Y chromosome.

Therefore, the given option is false.

04

Explanation of option (C)

A zygote is the fusion product of the male and female gamete after fertilization. The zygote contains23 chromosomes which can have either male or female gamete combinations in it.

The zygote does not contain the Y chromosome alone.

Therefore, the given option is false.

05

Explanation of option (D)

The somatic cells of the male contain the autosomes only, which does not include the sex chromosomes.

The somatic cell found in males does not contain the Y chromosome alone.

Therefore, the given option is false.

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Most popular questions from this chapter

If we continue to follow the cell lineage from question 4, then the DNA content of a single cell at metaphase of meiosis II will be

  1. 0.25x
  2. 0.5x
  3. x
  4. 2x

In the karyotype shown in Figure 13.3, how many pairs of chromosomes are present? How many sets?

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

If maternal and paternal chromatids have the same two alleles for every gene, will crossing over lead to genetic variation?

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.
See all solutions

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