Which of the following arguments best explains the differences in their features?
a
lucy and maria did not receive the same number of chromosomes, with one twin receiving more chromosomes and another receiving fewer chromosomes.
b
lucy and maria had different mutations occur in the chromosomes they inherited from their mother.
lucy and maria inherited different combinations of 23 chromosomes from their mother and 23 chromosomes from their father.
d
lucy inherited a complete set of 46 chromosomes from one parent and maria inherited a complete set of 46 chromosomes from the other parent.

Which of the following initial observations would more directly lead to this research study? a) ginko biloba is cost effective and also possesses heart-protective, antioxidant, anti-inflammatory properties. b) metformin is an effective treatment of patients with t2d, but shows side effects that complicate the disease state. c) over the past several years, the cost of treating t2d within the united states has increased dramatically. d) many plants contain molecules that improve the health and quality of life of patients with a variety of diseases like t2d. e) t2d affects millions of individuals in the usa and worldwide many of who could benefit from improved therapies.