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Examine the Punnett square below, which represents a dihybrid cross of two rose bushes.
RT Rtr rt
RT RRTT RRTU RITT RrTt
Rt RRT RRt RrTt Rett
T RITT RrTt TT Tt
it RrTt Rrtt rrtt rrtt
How many different genotype variations are possible in the offspring of these crossed rose bushes?

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils

What is the ecological role of food chains and food webs

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