BIO S2 Reflection Assessment (Wk. 18)

From the Penguin Lab, which species were specific to ONE location? (SELECT ALL that apply.)

• 15

• 4

• 6

• 1

From the Penguin Lab, which of the following speices was located in MORE THAN ONE location?

• 6

• 8

• 9

• 12

In a phylogenetic tree, how are branches and nodes different?

• Nodes show common ancestors, while branches show where the species diverged

• Branches indicate common ancestors, while nodes show where species diverged

• Branches are where animals are closely related to each other; Nodes are not important

• Nodes show common ancestors, while the branches are not important

Based on the fossils we have available, we have a COMPLETE evolutionary record of organisms on Earth, which the phylogenetic tree confirms.

• TRUE

• FALSE

A characteristic that is shared by organisms in a clade is called a ___, which we used to study relationships between organisms.

Structures between organisms that are similar, have a different function but are from a common ancestor are considered ​ (a)   , while ​ (b)   structures have a similar function but have a different structure.

• homologous
• analogous

The arms of a person and the fin of a whale are considered​ (a)   structures.

• homologous
• analogous
• homogenous

Match the following terms to their descriptions.

• allele frequency

• number of times an allele occurs in a gene pool compared to the total number of alleles in that pool for the same gene.

• gene pool

• group of individuals of the same species that mate and produce offspring

• population

• all genes and the alleles for those genes present in a population

Which of the following statements is true about Evolution (based on your notes)

• Evolution refers to the change in DNA over time

• Evolution refers to the changes in the frequency of alleles over time

• Time is not a factor in evolution; It occurs spontaneously

• Individuals evolve, not populations

Skin color, which requires multiple genes to express and has many different genotypes and phenotypes is considered...

• Single-gene

• Polygenic

• Multigenic

• Hygenic