Genetics
All the NZQA info you need to know about this standard:
There are three main sections in this topic:
|
DNA
You will need to know:
|
|
Inheritance
You will need to know:
You will need to know:
- How genes are inherited (meiosis and fertilisation)
- How genes are expressed (genotype, phenotype, homozygous, heterozygous, dominant, recessive alleles)
- How to do Punnett squares to predict offspring ratios
- Test crosses
- Sex determination
- Why the outcome may be different than the prediction
Variation
You will need to know:
You will need to know:
- Where variation comes from: genetic vs. environmental
- Mutations
- Sexual vs. Asexual reproduction
- How variation affects survival
- The importance of variation in a population
- Adaptive variation
KEY VOCABULARY
You need to have definitions for ALL of these terms learned off by heart - it's what the examiners are looking for:
You need to have definitions for ALL of these terms learned off by heart - it's what the examiners are looking for:
- gene
- allele
- genotype
- phenotype
- gamete
- zygote
- dominant
- recessive
- homozygous
- heterozygous
- pure breeding
- Punnett square
- pedigree chart
- mutation
- variation