Which cell is NOT involved with the immune
system?
a. erythrocytes
b. neutrophils
c. lymphocytes
d. eosinophils
e. macrophages
Answer: a
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Genetic studies of an animal show that eye color is controlled by an autosomal gene with the dominant
allele (R) for red eye color and the recessive allele (r) for yellow eye color. A second autosomal gene has the dominant allele (T) leading to paws with thumbs while the recessive allele (t) codes for paws without thumbs. The genetic cross RRTT ? rrtt creates offspring with genotype RrTt. One of those dihybrids is mated in a testcross (RrTt ? rrtt). Based on the principle of independent assortment the testcross should produce offspring with the phenotype ratio
a. 3 red-eyed with thumbs: 1 yellow-eyed without thumbs. b. 1 red-eyed with thumbs: 1 yellow-eyed with thumbs: 1 red-eyed without thumbs: 1 yellow-eyed without thumbs. c. 1 red-eyed with thumbs: 1 yellow-eyed without thumbs. d. 9 red-eyed with thumbs: 3 yellow-eyed with thumbs: 3 red-eyed without thumbs: 1 yellow-eyed without thumbs. e. 3 yellow-eyed with thumbs: 1 red-eyed without thumbs.
Antigen bearing particles in the blood travel to the ____, while those in solid tissues travel to the ____
a. spleen; bone marrow b. thymus; bone marrow c. spleen; lymph nodes d. lymph nodes; spleen e. bone marrow; thymus
Contrast endemic and ubiquitous fungal infection, and describe two examples of each type
What will be an ideal response?
examples of Analogous structures
What will be an ideal response?