5 Written questions
5 Matching questions
- genetic correlation
- darwins two main points were
- sampling error
- overtime do species develop more complex traits due to evolution
- a a random change in allele frequency where one allele becomes more common than another
- b that which when put to the test turns out to be true
- c a genetic constraint it is the connection of one allele with multiple traits
- d Organisms are descended from 1 or a few common ancestors, Natural selection is the mechanism for this descent.
- e no because complex traits are routinely lost and simplified over time as well as more complex ones created.
5 Multiple choice questions
- traits that are modified from an ancestral trait, and that are found in descendant species.
- traits that do not increase fitness but are present because they were in the ancestrial population or are for both genders.
- insertion of one or more bases A one base insertion result in the other bases to shift and make their codons code differently for amino acids. Sometime coding for a stop codon preventing the rest of the sequence from being read.
- large cliff swallows survived because they had more fat stores in a cold snap so the large allele became dominant for survival. might not be fixed though
- the use of two latin names to refer to a species
5 True/False questions
Fitness trade-off → a change in allele frequencies occurring due to genetic drift when a new population is established from a small sample of the original population called a founder event
cells contain what four molicules → Similarity in embryonic traits
Directional selection → an average difference between the survival/ reproduction of individuals with certain phenotypes relative to individuals with other phenotypes. only mechanism that can produce adaptation
population thinking → the study of allele frequencies of populations and how they change over time. It is based on mendelian genetics.
what does directional selection do to genetic variation → it decreases it