GED Weeks 11-12

3. A great deal of the variation we witness today began here
6. A recessive allele called creeper gives short, stunted legs in chicken. Two birds were crossed: one-third of the offspring was normal and two-thirds were creeper. What type of allele is creeper?
9. A change in DNA which does not lead to a change in protein
12. Human Hox11A and mouse Hox11A are examples of what type of genes?
13. Of all the processes that occur during meiosis, this one makes the largest contribution to genetic variability.
15. If you have two X chromosomes in a cell, what does one become?
17. The fact that there are multiple ways to encode each amino acid means that the genetic code is
18. Pouched mammals
19. The type of speciation that occurs despite the population occupying the same area.

1. Evolution by natural selection requires traits that affect fitness, are linked to specific genes, lead to differential fitness, and are
2. The AB blood type in humans in an example of
4. 22 of your chromosomes are
5. Blue eyes are what kind of trait?
7. The type of speciation that occurs when a population is separated.
8. What trait does Hamilton's law explain?
10. We can use the background mutation rate in non-conserved areas of the genome to determine a
11. Describes a gene which affects multiple seemingly unrelated traits.
14. Chance of reproducing x chance of survival
16. Non-familial Down syndrome often occurs because of non-disjunction during the meiotic divisions of which parent?