Hemophilia is not seen in individuals heterozygous for the hemophilia gene. Thus, the disease is ________.
a. recessive
b. codominant
c. dominant
d. X-linked
a. recessive
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Magnification
(a) is the amount that an object’s image is enlarged. (b) is the extent to which detail in an image is preserved during the magnifying process. Magnification (c) is the degree to which image details stand out against their background. (d) focuses light rays emanating from an object to produce an image.
The majority of the human population is __________ for this trait
a. homozygous recessive b. homozygous dominant c. heterozygous d. codominant
Answer the following statements true (T) or false (F)
1, Antigen-presenting dendritic cells are found in the skin and in the linings of the respiratory and digestive tracts. 2. The function of dendritic cells is to signal T cells, starting an immune response. 3. Experimental gene therapy can be used to treat a form of severe combined immune deficiency, SCID-X1. 4. People homozygous recessive for a 32-base deletion in the CCR5 gene do not become infected with HIV. 5. Mutation of the CCR5 coreceptor may have enabled people to survive various European plagues during the Middle Ages.
Humans may have one of four different blood types — A, B, AB, or O. Explain why a person with type O blood is referred to as the "universal donor" yet can receive blood only from other individuals with type O blood
What will be an ideal response?