- Are early cell divisions in mammals slow or fast and how long do they take?
- Nearly everything the embryo needs during its first stages of development comes from the ______?
- Placental mammals have a pattern of gastrulation similar to that of ________ and _____?
- What are cytoplasmic factors?*****
- In amphibians, are the cytoplasmic contents of the egg distributed homogeneously?
- What is cytoplasmic rearrangement initiated by and who contributed this to the zygote (egg/sperm)? (AMPHIBIANS)
- If you were to measure the height of every lima bean in a bag, what do you expect the graph to look like? Is this a polygenic trait or single - gene trait? How do you know?
- What taxonomic level is a chordata? What do all chordates have in common
- there is a total of 50 alleles. There are 20 black alleles and 30 brown alleles. What are the allele frequencies of each in the population?
- If the relative frequency of the black allele decreased in the gene pool, what would happen to the relative frequency of the brown allele?
- When the members of two populations cannot interbreed and produce fertile offspring, what has occurred?
- Does natural selection act on phenotypes or genotypes?
- List two natural disasters that might result in a small number of individuals from a population becoming and remaining isolated from the rest of the population. Which mechanism of evolution is this?
- What is the correct sequence of these major events in the origin of life?Use "<" to mean "before", "=" to mean "simultaneously with", and ">" to mean "after"Formation of protocells (protobionts)Synthesis of organic monomersSynthesis of organic polymersDevelopment of a hereditary mechanism
- The rock pocket mouse environment was originally sandstone, and the dark lava flows formed ~1.7 x 106 years ago. Due to mutation alone, how many dark mutant mice could have been born since the lava flow formed?
- If the probability of a dark mutant appearing is 1 in 25,000,000 mice, and the number of mice born per year is 25,000 mice/year, on average, one new dark mutant should appear every:
- Evolution results in a better match of an organism and the environment.
- What will happen to a population of snakes if the small mice they normally eat are no longer available and all that is left are larger rats that are more difficult to swallow?
- Speciation can only be observed over millions of years
- Imagine two separate populations of mice at sites A and D below. What would be the effect of gene flow between these two populations?