Some organisms have traits that them survive in certain situations, while others of the same species do not. these differences happen by due to genetic variation through sexual reproduction. a. chance b. planning

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

What are the doorways into and out of cells, attached to the membrane, and built in the rough er.

What was the purpose of mendel's experiments with dihybrid crosses? a. to determine if dna was a transforming factor b. to determine if traits could be recessive c. to determine if traits affected each other d. to determine if traits had more than one allele