The Evolution Of Evolution Flashcards
What is Linnaeus’ Species Concept
That species are distinguishable or diagnosable forms, which were from the beginning created by god, reproducing themselves forever in like form.
Meaning species are independent of each other
What did Jean Baptistery de Lamarck do
Created the first comprehensive theory of evolution based on inheritance of acquired characteristics
-> characteristics acquired for survival passed on to next generation
What are the three principles of Darwinian evolution?
- All species produce an excess of offspring (exponential growth)
- Organisms vary in their ability to not only reproduce but survive.
- Variation in the ability to survive and reproduce is (in part) inherited
What is evolution; simply put in terms with gene’s
A change in gene frequencies between generations -> may take many generations to be seen.
Allele definition
Each of two or more alternative forms of a gene
The sequence of DNA at a specified locus, an alternative form or variant of a DNA sequence at a given locus
Locus definition
The location of a sequence or place of interest on a chromosome
A specific place on a chromosome where a DNA sequence resides
What are Mendels laws?
- Segregation
- an offspring receives a random copy of an allele from each of its parents
- Independent assortment
- genes (on different chromosomes) are transmitted independently
Genotype definition
The combination of alleles, the genetic constitution of an organism
Dihybrid definition
A hybrid that is heterozygous with respect to two independent genes
Haplotype definition
The combination of loci on a single chromosome or part of a chromosome
