20. Sickle cell anemia is a genetic disease caused by an autosomal recessive gene. If each parent carries one sickle cell

allele, what are the chances that their child will have sickle cell anemia?

one in four

two in four

three in four

no chance

What geographical feature is the administrative unit for water pollution control int he european union? Seacoast City River Basin Nation

How has gene duplication played a critical role in evolution? see concept 21.5 (page 452) ?

Collecting research data is the final step in the scientific method. true or false

What is the smallest unit of matter that has characteristic properties of its element? atom molecule gas compound Answer - ATOM

A unique feature found only in archaeal cells is the Group of answer choices ability to grow in acidic environments presence of ribosomes insensitive to certain antibiotics presence of L-glycerol in the membrane lipids lack of a double-membrane

What is an unusual defense some lizards have developed to protect themselves?

What types of cells have half the number of chromosomes?

Is it true that prokaryotic organisms are always unicellular, but eukaryotic organisms are always multicellular

What is the difference between a single gene disorder, multifactorial disorder and a chromosomal abnormality?

How are pediment formed?