CYTO - Prelims (lesson 3)

single chromosome plus plasmids (PROKARYOTES or EUKARYOTES)

many chromosomes (PROKARYOTES or EUKARYOTES)

linear chromosomes (PROKARYOTES or EUKARYOTES)

circular chromosome (PROKARYOTES or EUKARYOTES)

made only of DNA (PROKARYOTES or EUKARYOTES)

found in cytoplasm (PROKARYOTES or EUKARYOTES)

found in a nucleus

made of chromatin, a nucleoprotein (DNA coiled around histone proteins)

copies chromosomes, then the cell grows, then goes through mitosis to organize chromosomes in two equal groups

At the beginning of mitosis, they can be seen to consist of two threads (sister chromatids) joined by a __________ (CHROMOSOMES IN EUKARYOTES)

Telocentric Chromosome

Acrocentric Chromosome

Sub-metacentric Chromosome

Metacentric Chromosome

Chromosomes are analysed by organising them into a ____________________

The X and the Y chromosomes are called

Multicellular organisms copy their chromosomes before cell division. ; They must grow to a mature size.

The nucleus divides, distributing the chromosomes into two equal groups

The cytoplasm then divides each part taking a nucleus

a special type of cell division ; used to make sex cells

halves the numbers of chromosomes ; picks one chromosome from each pair at random and places them in a sex cell. This results in enormous variation amongst the sex cells.

Inheritance of Gender

Blood type is also __________