ANTHRO 2200 pre labs
Terms in this set (30)
A female dog, Sally, is hit by a car when she is two years old, causing her owners to amputate one of her legs and leaving her with only three. At four years old, Sally has a litter of puppies. Based on the strictest interpretation of Lamarck's explanation for evolutionary change, how many legs would each of her puppies have at birth?
What is the name of the erroneous mechanism outlined in the previous pre-lab question (question 1 above)?
inheritance of acquired characteristics
Greyhounds, a dog breed, were produced by humans breeding the fastest males and fastest females from each generation. What is this called?
Whose work led to Darwin's recognition of the struggle for existence in organisms due to the competition for limited resources?
Darwin was the first scientist to propose the idea of evolutionary change.
Which of the following would not be considered an adaptation?
Over several generations, the average size of potatoes increased as a result of chemical alterations to fertilizer that increased the soil's nutritional content.
Natural selection is a random process.
explains adaptations and results in the gradual accumulation of small changes over time
Lactose tolerance evolved in human populations with domesticated dairy animals.
Which process can result in a difference of size, appearance, and/or behavior between opposite sexes of the same species (i.e., sexual dimorphism)?
are segments of DNA that code for proteins, are located on chromosomes, come in pairs but segregate during the formation of gametes, assort independently of each other if they are on different chromosomes
Alternative forms of a gene are known as what?
If the sequence of bases on one strand of DNA is ATGCCGAT, the sequence on the complementary strand will be what?
Which of the following laws states that each pair of homologous chromosomes separates during meiosis so that only one allele for a given trait will be present in each of the gametes produced?
law of segreation
The ABO blood group is an example of what?`
What type of trait exhibits continuous variation and is not strongly influenced by the environment?
What type of trait exhibits continuous variation and is influenced by the environment?
If a homozygous individual expressing the DD genotype for a trait that is crossed with a heterozygous Dd individuals, what percentage of the resulting offspring, on average, would be expected to exhibit the recessive phenotype?
When the phenotypic expressions of a trait can be separated into a few discrete categories, the trait is said to:
exhibit discontinuous variation
Which of the following best describes complex traits?
They result in phenotypes that exhibit a continuum of variation.
For natural selection to result in evolution, which of the following must occur?
must be biological variation in a population, he variation present within a population must be heritable, individuals exhibiting certain variants must produce more offspring than individuals without those variants
increases variation within the population to which the genes are moving, decreases variation between populations
is a random change in allele frequencies across several generations
Which of the following can produce new genetic variation within a population? Hint: the others only operate on pre-existing variation.
When a small subgroup of a larger population breaks off and becomes reproductively isolated, what force of evolution may act on the population?
All mutations result in negative consequences for the individual and his or her offspring.
In the theory of evolution, which of the four forces provides an explanation for organisms' adaptations to their environment?
Heritable mutations (mutations that will be passed to future generations) occur where?
What is the term for the force of evolution that moves alleles from one population to another?
Which of the following are part of the four major assumptions of Hardy-Weinberg equilibrium?
evolution is not occurring in the population ,the population is infinitely large, all members of the population produce the same offspring