/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} 13-4TYU If the DNA content of a diploid ... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 13: 13-4TYU (page 268)

If the DNA content of a diploid cell in the G1 phase of the cell cycle is x, then the DNA content of the same cell at the metaphase of meiosis I will be

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

Short Answer

Expert verified
  1. The option 鈥�0.25x鈥� is false.
  2. The option 鈥�0.5x鈥� isfalse.
  3. The option 鈥渪鈥� is false.
  4. The option 鈥�2x鈥� is true.

Step by step solution

01

Description of meiosis and diploid cell

The cell cycle involves steps such as the G1 phase, synthesis phase, and G2 phase. The G2 phase is followed by the mitosis or meiosis phase. The meiosis process occurs in sperm cells that results in the formation of four haploid daughter cells.

02

Explanation of option (A)

After the metaphase of meiosis, the number of DNA get doubles.

The number of DNA is not reduced for one-fourth time.

Therefore, the given option is false.

03

Explanation of option (B)

The number of DNA gets doubled due to an increase in the number of pairs. The number of DNA does not get reduced to 0.5x.

The value of DNA does not get reduced by half.

Therefore, the given option is false.

04

Explanation of option (C)

The number of DNAs gets doubled in the metaphase stage. The DNA of the G1 phase will not remain the same in the metaphase of meiosis I.

The number of DNA of the same cell will not remain the same after both phases.

Therefore, the given option is false.

05

Explanation of option (D)

In general, meiosis is the process that creates four cells. The metaphase of meiosis involves the alignment of homologous pair of chromosomes on either side of the equatorial plate.

The DNA content also increases twice since there is a formation of chromosomal pairs in the metaphase.

The value of x is the initial DNA content which then increases 2x.

Therefore, the given option is true.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

A certain eukaryote lives as a unicellular organism, but during environmental stress, it produces gametes. The gametes fuse, and the resulting zygote undergoes meiosis, generating new single cells. What type of organism could this be?

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

The diploid number for fruit flies is 8, and the diploid number for grasshoppers is 46. If no crossing over took place, would the genetic variation among offspring from a given pair of parents be greater in fruit flies or grasshoppers? Explain.

Compare the chromosomes in a cell at metaphase of mitosis with those in a cell at metaphase II. (See Figures 12.7 and 13.8.).

First, set up your graph. (a) Place the labels for the independent and dependent variables on the appropriate axes, followed by units of measurement in parentheses. Explain your choices. (b) Add tick marks and values for each axis. Explain your choices.
See all solutions

Recommended explanations on Biology Textbooks

Ecology

Read Explanation

Heredity

Read Explanation

Cell Cycle

Read Explanation

Energy Transfers

Read Explanation

Ecosystems

Read Explanation

Biological Molecules

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.