Cell Division - Mitosis: Overview, DNA Replication, and Regulation

Play an AI-generated podcast conversation about this lesson

When a cell is preparing to divide, what happens to the chromatin?

The chromatin remains in a loose, thin fiber state

The chromatin is dissolved and lost

The chromatin becomes more condensed and visible as chromosomes (correct)

The chromatin is randomly packaged into the cell

What is the total number of chromosomes in a human somatic (body) cell?

23

115

46 (correct)

92

What are homologous chromosomes?

Chromosomes that are identical in structure and function

Chromosomes that come in pairs

Chromosomes that are inherited from both parents

All of the above (correct)

What is the difference between a haploid and a diploid cell?

Haploid cells have one complete set of chromosomes, diploid have two Signup and view all the answers

What is a karyotype?

A profile of a person's chromosomes arranged by size and number Signup and view all the answers

How many pairs of autosomal chromosomes do humans have?

22 pairs Signup and view all the answers

What are the two forms of chromatin found in cells?

Euchromatin and Heterochromatin Signup and view all the answers

During prophase, chromatin condenses into which form?

Chromosomal form Signup and view all the answers

Which type of cells have a relatively easy time sorting daughter chromosomes during cell division?

Prokaryotic cells with only 1 chromosome Signup and view all the answers

What is the goal of cell division in eukaryotes?

To partition identical copies of genetic material between two daughter cells Signup and view all the answers

Which term describes the distribution of one identical copy of each chromosome to developing daughter cells in eukaryotes?

Mitosis Signup and view all the answers

In binary fission, what happens to the circular chromosomes produced by prokaryotes?

They move to opposite ends of the cell and form two cells Signup and view all the answers

How many chromatids are there in a duplicated chromosome during the S-phase of interphase?

2 Signup and view all the answers

What is the total number of chromatids in a diploid cell with 46 chromosomes after DNA replication?

92 Signup and view all the answers

How many pairs of sister chromatids are present in a diploid cell with 46 chromosomes?

92 Signup and view all the answers

What is the haploid number of chromosomes in a cell that has a diploid number of 46 chromosomes?

23 Signup and view all the answers

How many different chromosomes would be observed in a karyotype of a diploid individual with 46 chromosomes?

23 Signup and view all the answers

Which term describes the complex of DNA and proteins in the cell nucleus?

Chromatin Signup and view all the answers