If an athlete damages the cartilage in her knee, it tends to heal very slowly because cartilage
A) cannot be replaced or repaired by the body.
B) lacks a blood supply.
C) hardens with age.
D) is rejected by the body as it is formed.
E) is dead tissue.
B
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During his experiments with pea plants, Mendel referred to the trait that was expressed in the F1 or first filial generation as
A. recessive. B. dominant. C. codominant. D. independent. E. homozygous.
A ____ is formed as the direct result of cytoplasmic fusion in basidiomycetes and ascomycetes
a. dikaryotic cell b. Zygote c. Gamete d. Spore e. Mushroom
Four of the five scientists listed below are related by
a common observation. Select the exception. a. Hooke b. Galileo c. Schwann d. Schleiden e. Virchow
When the two gametes that fuse to form a zygote contain different alleles of a given gene, the offspring is
A) abnormal. B) heterozygous. C) a new species. D) homozygous. E) haploid.