Problem 7 - Biology Concepts and Applications

Question

After mitosis, the chromosome number of a daughter cell is________ the parent cell’s. a. the same as b one-half c. rearranged compared to d.doubled compared to

Step-by-Step Solution

Answer

a. the same as

Step 1: Understanding Mitosis

Mitosis is a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent cell. This process ensures that the genetic material is equally distributed to each daughter cell.

Step 2: Analyzing Chromosome Number

In mitosis, the parent cell replicates its chromosomes before division, so each daughter cell receives an identical set of chromosomes. This replication is crucial because it maintains the chromosome number across generations of cells.

Step 3: Comparing with the Parent Cell

Since each daughter cell receives the same set of chromosomes as the parent cell, the chromosome number in each daughter cell is identical to the chromosome number of the parent cell.

Key Concepts

Cell Division

Cell division is a fundamental process for all living organisms. It allows cells to reproduce and organisms to grow, repair damaged structures, and maintain their systems.
There are several types of cell division, but one of the most common is mitosis. Mitosis is responsible for growth and repair in the body and ensures that each new cell receives an exact copy of the genetic material.

• Mitosis produces two daughter cells.
• Each daughter cell gets a full set of chromosomes.
• The process maintains the organism's chromosome number.

Understanding cell division through mitosis helps us appreciate how life continues and organisms develop and regenerate.

Chromosome Number

One critical aspect of cell division is maintaining the correct chromosome number. Chromosomes are structures within cells that contain DNA, the blueprint of genetic information. In mitosis, this number remains constant from parent to daughter cells. This is vital for preserving the organism's genetic consistency.

• Before mitosis begins, the parent cell duplicates its chromosomes.
• Each chromosome now has an identical partner called sister chromatids.
• During cell division, these chromatids separate to different cells.

In mitosis, the chromosome number in each daughter cell is the same as that of the parent cell, ensuring stable genetic instruction transmission with no changes or losses.

Genetic Material

Genetic material, mainly referring to DNA, carries the genetic instructions needed for an organism's growth, development, functioning, and reproduction. Mitosis ensures that this genetic material is precisely copied and distributed evenly to the daughter cells.

• DNA is tightly packed into chromosomes during mitosis.
• This packing allows the genetic material to be divided equally.
• Exact division is crucial for maintaining genetic integrity.

In mitosis, each daughter cell gets an identical set of genetic material, preserving the organism's identity through consistent cellular reproduction.