The change in the chromosomes depicted between the top and the bottom in the accompanying figure represents a(n)
a. inversion
b. duplication
c. reciprocal translocation
d. deletion
e. Philadelphia chromosome
ANSWER: c
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Which of the following is TRUE of fate mapping?
A. It determines the ultimate structure/function of a particular cell type during embryonic development. B. It maps the genes of an embryo. C. It assesses the quality of a developing embryo. D. It maps the proteins within a morphogenic field. E. It determines hereditable disorders in the embryo.
Blood cell maturation has many pathways and can be complex. What is the product of the maturation of a megakaryocyte?
a. lymphocyte b. red blood cell c. platelets d. macrophage
Before examining a fungal cell under a microscope, you are told that it is a dikaryotic cell. Given that,
you should expect the cell to have
a. two complete sets of chromosomes. b. two nuclei. c. two hyphae. d. two complete sets of chromosomes and two nuclei. e. two nuclei and two hyphae.
Albinism is an autosomal (not sex-linked) recessive trait. A man and woman are both of normal pigmentation and have one child out of three who is albino (without melanin pigmentation). What are the genotypes of the albino's parents?
A) One parent must be homozygous for the recessive allele; the other parent can be homozygous dominant, homozygous recessive, or heterozygous. B) One parent must be heterozygous; the other parent can be homozygous dominant, homozygous recessive, or heterozygous. C) Both parents must be heterozygous. D) One parent must be homozygous dominant; the other parent must be heterozygous.