Genomics

Question 1

How are field crickets in oceania showing the evolutionary process?

Answer 1

• Males infected by parasitoid fly which detects mating song
• Some males have developed feminised wings, now mutation present on 95% of males and spreading to different islands
• Different islands have different degrees of feminisation suggesting different origins?

Question 2

What is a genome?

Answer 2

All the genetic material including both the genes and chromosomes

Question 3

What 2 laws of genomics were devised by Mendel?

Answer 3

segregation - characteristics controlled by ‘unit pairs’ that segregate randomly
independent assortment - assignment of genes controlling different traits is random

Question 4

Who was the first to discover chromosomes and link them to the Mendelian laws?

Answer 4

Flemming (1879) - colourful bodies in cell nuclei

Boveri-Sutton - discovers links to Mendelian laws