The nucleus of a cell contains chromosomes. Chromosomes carry genes. Inside the nucleus The nucleus of a cell contains chromosomes. Chromosomes carry genes. Genes code for proteins. Genes are made from DNA. Inside the nucleus
Inside the nucleus Inside the nucleus
Inside the nucleus Inside the nucleus
Chromosomes Chromosomes
Each daughter cell has the diploid number of chromosomes. Mitosis Mitosis is a form of cell division which produces exact copies of cells. Each daughter cell has the diploid number of chromosomes. Mitosis
Mitosis Mitosis
Mitosis Mitosis
Mitosis Mitosis
Each daughter cell has the haploid number of chromosomes. Meiosis Meiosis is a form of cell division which produces sex cells (e.g. sperm or egg cells). Each daughter cell has the haploid number of chromosomes. Meiosis
Meiosis Meiosis
Meiosis Meiosis
Meiosis Meiosis
Mitosis and Meiosis Mitosis and Meiosis
DNA strands are made from sugar, phosphate and bases DNA contains coded information that determines inherited characteristics DNA strands are made from sugar, phosphate and bases There are four bases – A, C, T and G DNA can replicate because base A and T always pair and C and G always pair. 3 bases code for one amino acid Chromosomes and DNA
Nucleotides Chromosomes
DNA Chromosomes
DNA replication Chromosomes
DNA bases Chromosomes
Gametes are sex cells (e.g. sperm or egg cells) Fertilisation Gametes are sex cells (e.g. sperm or egg cells) When male and female gametes join in fertilisation, a zygote is formed. Fertilisation
Fertilisation Fertilisation
Fertilisation Fertilisation
Fertilisation Fertilisation
Fertilisation Fertilisation
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