Gregor Mendel
Gregor Mendel formulated some basic principles of heredity from the results of his experiments with...?
Pea Plants
Who developed the theory of evolution?
Charles Darwin
How many Chromosomes do humans typically have...?
46
The instruction manual of our genetic traits.
Genotype
When Mendel bred a purple flowered plant with a white flowered plant, all the plants in the 2nd generation were purple because that color was ?
Dominant
Observation of Galapagos Finch populations and their traits
How many pairs of Chromosomes do humans typically have...?
23
What we see in the mirror.
Phenotype
After observing traits in offspring of many generations of pea plant crosses, Gregor Mendel discovered that in order for a recessive trait to show up, each plant much carry a what?
recessive gene
The species of finches that Darwin found on the Galapagos Islands displayed different structural and behavioral adaptations. What is the best explanation for these adaptations?
Geographical Isolation from other populations of finches
Early stages in the embryo of a fish are similar to the early stages of human and pig embryos. What is one explanation for this...?
All three species have a common ancestor
If something is the same strucutre in different organisms but has different jobs/functions in that organism, it is what.
Homologous
Although Mendel saw how traits were transmitted to other generations of plants, he did NOT discover what we know as what?
DNA
What would be the most probable effect of reproductive isolation in a population?
The development of new species
Describe an example of a phenotype observable in humans
Eye color, Hair color, Skin Color, Height, etc...
An organism with the best traits for a certain environment will have the best chance of breeding and having offspring that survive. This is known as
Survival of the Fittest.
A dog is homozygous dominant for the trait of a long tail. If this dog breeds with another dog that is homozygous recessive for short tail, what is the chance the offspring will have a short tail?
100%
75%
50%
25%
0%
0%
What does 'survival of the fittest' actually mean?
Individuals that exhibit greatest reproductive success will pass on their genes, perpetuating their geno and phenotypes throughout a population
A variant of a gene that may or may not cause a change in Phenotype
Allele
Give an example of a trait that became divergent.
Wolves to dogs.