LS4.A: Evidence of Common Ancestry and Diversity
Genetic information provides evidence of evolution. DNA sequences vary among species, but there are many overlaps; in fact, the ongoing branching that produces multiple lines of descent can be inferred by comparing the DNA sequences of different organisms. Such information is also derivable from the similarities and differences in amino acids
April 7. 2014
Qfd: That which doesn’t kill us makes us stronger.” – ?
icate scientific information that common ancestry and biological evolution are supported by multiple lines of empirical evidence.
1) notes on
natural selection
April 8, 2014
Qfd: I haven’t failed. I’ve just found 10, 000 ways that won’t work.” – Thomas Edison
?fd: explain the similarities between species and their amino acid chains
Today’s learning objective: HS LS 4-1 Students who demonstrate understanding can:
Communicate scientific information that common ancestry and biological evolution are supported by multiple lines of empirical evidence.
1) notes on common ancestry
2) article T-rex was a chicken
April 9, 2014
Qfd: Never leave that till tomorrow which you can do today.” – Benjamin Franklin
?fd provide 3 forms of evidence concerning common ancestry
Today’s learning objective: HS
LS 4-1 students who demonstrate understanding can:
Communicate scientific information that common ancestry and biological evolution are supported by multiple lines of empirical evidence. and sequences and from anatomical and embryological evidence.
1) quiz
1) The spotted touch-me-not, a flowering plant, has seed pods that burst open when touched and forcefully eject their seeds. Such an adaptation is favorable because it
1. aids in the dispersal of the species.
2. attracts insects that aid in pollination.
3. prevents germination within the seed pod.
4. can cause genetic changes to occur.
2) The diagram below illustrates the change that occurred in the frequency of phenotypes in an insect population over 10 generations. A probable explanation for this change would be that over time there was
1. a decrease in the adaptive value of gene a
2. an increase in the adaptive value of gene a
