Mendel was able to study seven traits in all the pea plants in each generation. which of his hypotheses allowed him to analyze each trait separately?
a) if two different alleles for a gene occur together, one of the alleles may be expressed while the other is hidden.
b) when gametes are formed, each gamete carries only one allele for the gene.
c) there are alternate versions of a alleles called genes.
d) for each inherited trait, there is only one copy of the gene that codes for that trait.

Which table best shows the impacts resulting from human activity? impact of human activities human activity impact use of manure and other organic fertilizers reduction in population of birds use of pesticides in farms increase in bird population in nearby wetlands impact of human activities human activity impact use of manure and other organic fertilizers reduction in animal population use of pesticides in farms increase in population of native insects and bugs impact of human activities human activity impact use of plastic decrease in marine animal population removal of beach grass increase in pollution of ocean impact of human activities human activity impact use of plastic increase in fish population removal of beach grass decrease in sand erosion