Inheritance is the process of passing genetic information to offspring. Genes are sections of DNA that code for a protein. Inheritance of genes can be shown in Punnett square diagrams.
What are alleles?
Different versions of the same gene
A small section of DNA in a chromosome
The entire genetic material of an organism
Why is fertilisation a random process?
Because a few sperm and eggs are released at a specific time
It is always known which sperm and egg will fuse during fertilisation
It is not known which sperm and egg will fuse during fertilisation
Which of these is the genotype for a male baby?
What phenotype is produced from an XY genotype?
Which of these are examples of genetic variation?
Scars and gender
Height and eye colour
Eye colour and gender
Which of these is a heterozygous genotype?
What is meant by a dominant allele?
An allele that will always be expressed in the genotype
An allele that will only be expressed in the phenotype when two of the alleles are present
An allele that is never affected by the environment
Which of these is the best technique to show the inheritance of a disease over several generations?
In a cross between two heterozygous individuals, Aa, what ratio would be expected in the offspring?
1 Aa to 1 aa
1 AA to 2Aa to 1 aa
What term is used to describe sperm and egg cells?