4.6 Inheritance, variation & evolution
Topic 1 - Sexual & Asexual Reproduction
Topic 1 - Sexual & Asexual Reproduction
Topic 2 - Meiosis
Topic 2 - Meiosis
Topic 3 - DNA
Topic 3 - DNA
Topic 4 - Inheritance
Topic 4 - Inheritance
Topic 5 - Inherited Disorders
Topic 5 - Inherited Disorders
Cystic fibrosis is a recessive condition. To have cystic fibrosis an individual needs to be homozygous recessive for the CF allele. Both Parents must therefore be heterozygous for the allele.
Cystic fibrosis is a recessive condition. To have cystic fibrosis an individual needs to be homozygous recessive for the CF allele. Both Parents must therefore be heterozygous for the allele.
Polydactyl is a dominant condition. To have polydactyl only one copy of the allele needs to be inherited. Heterozygous individuals will have polydactyl.
Polydactyl is a dominant condition. To have polydactyl only one copy of the allele needs to be inherited. Heterozygous individuals will have polydactyl.
Topic 6 - Sex determination
Topic 6 - Sex determination
During Meiosis all 23 pairs of chromosomes are separated including the 23rd pair - the sex chromosomes.
During Meiosis all 23 pairs of chromosomes are separated including the 23rd pair - the sex chromosomes.
As females are XX all eggs contain an X chromosome.
As females are XX all eggs contain an X chromosome.
As males are XY sperm contain an X or a Y
As males are XY sperm contain an X or a Y
Topic 7 - Extinction & Fossilisation
Topic 7 - Extinction & Fossilisation
Topic 8 - Natural Selection & Antibiotic resistance
Topic 8 - Natural Selection & Antibiotic resistance
Topic 9 - Selective Breeding
Topic 9 - Selective Breeding
Topic 10 - Genetic engineering
Topic 10 - Genetic engineering
Topic 11 - Classification
Topic 11 - Classification
Topic 12 - Evolution (Separate Science)
Topic 12 - Evolution (Separate Science)