Cell Division (AQA GCSE Biology): Flashcards
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14 cards from this deck
Structures that organize genetic information
Structures that organize genetic information
Chromosomes
What are chromosomes made of?
What are chromosomes made of?
Long, tightly coiled strands of DNA
Short sections of DNA on chromosomes
Short sections of DNA on chromosomes
Genes
What do genes code for?
What do genes code for?
Specific proteins
What does each gene influence?
What does each gene influence?
A particular characteristic or trait
How many chromosome pairs in human body cells?
How many chromosome pairs in human body cells?
23 pairs
Total chromosomes in human body cells
Total chromosomes in human body cells
46
Origin of each chromosome in a pair
Origin of each chromosome in a pair
One from mother, one from father
Examples of gametes (sex cells)
Examples of gametes (sex cells)
Sperm and egg cells
How many chromosomes in gametes?
How many chromosomes in gametes?
23 (one from each pair)
Chromosomes in embryo after fertilization
Chromosomes in embryo after fertilization
46 (full set)
Control centre of the cell
Control centre of the cell
Nucleus
What does the nucleus contain?
What does the nucleus contain?
Genetic information
How many genes on each chromosome?
How many genes on each chromosome?
Many genes