Human genetics: methods and hereditary diseases
Answers are for parents and teachers.
1
List the methods of studying human genetics with one sentence each.
Pedigree, twin, cytogenetic (karyotype), biochemical, molecular genetic; each studies the hereditary basis of a trait or disease in a different way.
2
Polydactyly is dominant: of 6 children of Aa × aa about how many have extra fingers?
3
3
Albinism (aa): parents Aa × Aa. Among 4 children how many albinos are expected on average?
About 1 (probability ¼).
4
Write the chromosome numbers in Down, Klinefelter and Turner syndromes.
Down — 47; Klinefelter — 47 (XXY); Turner — 45 (X).
5
Why do people with hereditary conditions deserve respect and care? Write in 2 sentences.
A hereditary condition is nobody’s fault; it results from a mutation. With support these people learn, work and contribute to society.