genomes

Question 1

genome

Answer 1

• a complete set of genetic instructions

- nearly every somatic cell has a complete copy of a genome

Question 2

Human genome project

Answer 2

• HGP international scientific research project (1990)
• determine sequence of chemical base pairs, making up human DNA
• identify and map all genes of human genome (physical and functional)
• BRCA2 gene associate with breast cancer
• Apo-E gene linked with alzheimers
• LDL receptor gene linked with bad cholesterol abd heart disease

Question 3

genetic counselling

Answer 3

• health professionals with specialised graduate degrees
• provide information and support to families with birth defects or genetic disorders
• study family and medical histories to analyse patterns
• best way to manage disorders

Question 4

what sort of issues could be discussed?

Answer 4

• should couple have children if both have faulty gene
• is artificial insemination by a donor or embryo a practical alternative
• is the vitro fertilisation a possible option
• should cousins contemplate having children

Question 5

family tree

Answer 5

• pattern of inheritance investigated by family pedigree
• shows both genotypes and phenotypes of several generations
• normal phenotype, carriers of genetic disorder

Question 6

how are family trees useful?

Answer 6

• can help predict the likeliness of a pass of a genetic disorder
• genetic counsellor, uses information from parents to determine a family tree