This is true, however recombinations can also cause new alleles
1. Phenotypic
A phenotype is the physical representation of a gene. (Think Ph = Physical. That's how I remember it!)
2. Genotypic?
A genotypenis the gene. It is not seen physically.
3. Genes
Alleles are variant forms of a singular gene.
Answer:
A
Explanation:
They form in mountains and flow through mountain river valleys. Glaciers cause erosion by plucking and abrasion.
