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RELEVANT LEARNING OUTCOME:
This section covers some important terminologies/general concepts for the subsequent subsections
Different types of cell division
Introduction to Cell cycle
Structure of chromosome
Binary Fission
Binary Fission
👁️🗨️ Watch the video to learn more about Binary Fission, a type of cell division. However, you don't need to know the details of this process (yet).
Difference between Chromatin, Chromosome, Chromatid & DNA
Difference between Chromatin, Chromosome, Chromatid & DNA
👁️🗨️ Watch the top video from 2:47 to learn more about these terms.
Chromatin:
Chromosome:
Chromatid
DNA
👁️🗨️ Watch the video below to learn more about these terms.
Homologous Chromosomes vs sister chromatids
🖊️Check Your Understanding: Conceptual Check 1
🖊️Check Your Understanding: Conceptual Check 1
1. In human,
1. In human,
a) Number of chromosomes in haploid cells
a) Number of chromosomes in haploid cells
b) Number of chromosomes in diploid cells
b) Number of chromosomes in diploid cells
c) Number of chromosome inherited from each parent
c) Number of chromosome inherited from each parent
d) Number of homologous pairs in diploid cell
d) Number of homologous pairs in diploid cell
a) 23
b) 46
c) 23
d) 23
2. The diagram shows the production of a zygote.
Which correctly describes the zygote?
Ans: D
🖊️Check Your Understanding: Learning Goals Checkpoint
🖊️Check Your Understanding: Learning Goals Checkpoint
At what stages does the DNA in our cells (cell cycle) exist as chromosomes, chromatin, and chromatids?
Chromatin: during DNA replication
Chromosome: during prophase of mitosis
Chromatid: after DNA replication (S-phase), one chromosome is made up of two sister chromatids
2. What are the differences between cell division and nuclear division?
2. What are the differences between cell division and nuclear division?
Cell Division: separation of a cell into two or more daughter cells.
Nuclear Division: mitosis or meiosis – the equal division of the nuclear contents into two daughter nuclei, but not the cell.
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