In the following pedigree showing the transmission of Cystic Fibrosis, an autosomal recessive condition, what must the genotype of the indicated woman
be?

A: FF

B: Ff

C: ff

D: cannot determine

*red circle is affected female*
*blue circle is normal female*
*red square is affected male*
*blue square is normal male*

One statements is an example of a scientific observation. another statement is an example of a scientific explanation. identify the correct statement for each category to illustrate how scientific explanations are inferred from scientific observations.

Prior to the development of dna fingerprinting, blood type could be used to determine possible parentage. although it might prove someone was not a parent, it could not show if someone was positively the parent, only that he or she might be a parent. which of the following is a true statement that can be made about parentage based on blood typing?

Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air