Which statement best describes the levels of organization within the human circulatory system? Blood cells and muscle tissue are organs of the circulatory system.
6 The structures of the circulatory system are all made up of a single type of tissue.
Cells are made of tissues that enable them to move materials through blood vessels.
d
An organ made of tissues pumps cells throughout the body to deliver oxygen and nutrients.

Anormal appearing couple is found to be heterozygous recessive for albinism both have the genotype aa the gene responsible for albinism is recessive to the normal pigment-producing gene what are the changes of their children being albino

Research question: why are the carrots that grew on the left side of the garden larger than the carrots that grew on the right side of the garden? which hypothesis is based on this research question? a comparison of people with gardens to people without gardens will show who is likely to live longer. b. carrots are thought to be good for your eyesight and should be eaten regularly. c. carrots that are provided lots of sunlight grow to a larger size than carrots grown in the shade. d. eating fresh vegetables every day is a healthy thing to do.

Can a trait be both polygenic and have multiple alleles? explain why or why not.