Where are the answer choices?
If we name the gene for freckles with F, then the genotypes for having freckles are Ff (heterozygous), FF (dominant homozygous) and for no freckles ff (recessive homozygous).
If we name the gene for nose shape with N, than the genotypes for broad noses are NN (dominant homozygous) and Nn (heterozygous) and for narrow noses nn (recessive homozygous). A cross between two heterozygous:
P: FfNn x FfNn
F1:
9/16 are with freckles and broad noses
3/16 are with freckles and narrow noses
3/16 are with no freckles and broad noses
1/16 are with no freckles and narrow noses.
Carbon fixation.<span> A </span><span><span>\text {CO}_2<span>CO<span><span>2</span><span></span></span></span></span>C, O, start subscript, 2, end subscript</span><span> molecule combines with a five-carbon acceptor molecule, ribulose-1,5-bisphosphate (</span>RuBP<span>). This step makes a six-carbon compound that splits into two molecules of a three-carbon compound, 3-phosphoglyceric acid (3-PGA). This reaction is catalyzed by the enzyme RuBP carboxylase/oxygenase, or </span>rubisco<span>.</span>
Answer:
Humoral immunity refers to the component of the adaptive immune response that is caused by B cells, antibodies, and type 2 helper T cells (Th2), as well as circulating mast cells and eosinophils to a lesser extent.