Chapter 12, Problem 30P

Summary Introduction

To determine:

The type of cell division that is represented in the figure and the relationship between the parts of figure.

Introduction:

Meiosis, also known as the reductional division, is the second type of cell division that takes place in eukaryotes. The cell division is marked by a decrease in the chromosome number to half. This type of cell division allows the recombination of the genes on the chromosome to produce a zygote. The two diploid cells undergo division to produce four haploid daughter cells.

Summary Introduction

To determine:

The difference between cohesion of centromeres and cohesion of arms.

Introduction:

The chromosomes are condensed structures that are formed during the early phases of cell division from the loose network of chromatin thread and then regain their original structure after being divided into daughter cells.

Summary Introduction

To determine:

The mechanism that keeps the chromosomes together during metaphase.

Introduction:

The human consists of 23 pairs of chromosomes, condensed form of chromatids which divide during cell division into daughter cells. The human has 22 autosomes and one pair of sex chromosomes. The sex chromosomes determine the sex in an individual based on the type of sex chromosomes that are present in the fusing gametes.

Summary Introduction

To determine:

The role of shugoshin and the enzyme it inhibits.

Introduction:

The chromosome from chromatids are formed through the process of supercoiling. The chromatin fibres are condensed into thick structures called the chromosomes. This chromosome in bacteria is circular whereas in eukaryotes it is linear.