to determine whether traits can be inherited independently
Explanation:
the use of dihybrid crosses allowed him to discover the law of independent assortment / discovering that each locus had 2 alleles which segregate during the creation of gametes.
The hormone ethylene is a gas and disperses easily.
If the disease was cause by the dominant allele, every person with said gene would be affected with the disease. if the genetic allele is recessive, both parents can be carriers (hetero) without being affected. that makes it easier for the genes to keep being passed on.
hope this helps!
The answer is the last one ( option D )
This plant is an invasive species.
