Directions: On the the fore each definitu win the letter of the term that makes it correcth Eerdere is used only one
4. a mix of rock, at water minerals and the
A. atmosphere
remains of once-living things
B. biotis factors
5. All lite needs it and is mostly composed of it. C soul
6. the living parts of an cosystem
D. waley
7. the layer of cases that surrounds Barth

Select the correct answer. tay-sachs disease is caused by a mutation in the hexa gene located on chromosome 15. tay-sachs follows an autosomal recessive pattern of inheritance. with the of the diagram, identify which of the offspring will be an unaffected carrier. a diagram showing the genes of parents who are carriers of tay-sachs disease a. a, b, and c b. b and c c. a and d d. a e. d

1. describe the structure and function of the specialized cells you observed in the video. 2. research the types of cells present in the kidney.

Which of these is not a nucleotide base found in dna?