Which of the following is a characteristic of tundra?
A. temperate climate
B. permafrost
C. more than 100 cm of rain a year
D. deciduous forests
E. high biodiversity
B. permafrost
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What is the distribution of parental chromosomes in each of the four haploid cells produced by meiosis II?
A) 100% maternal or paternal chromosomes B) a 75%:25% mix of maternal and paternal chromosomes C) a 50%:50% mix of maternal and paternal chromosomes D) a random mix of maternal and paternal chromosomes E) The distribution depends on whether the organism is haploid or diploid.
Which antigens are most important in matching for tissue transplants?
A) HLA A and B B) blood group antigens A or B C) HLA DR1 and DQ1 D) all of the above
Which of the following actions is part of the immune response in the respiratory system?
A) Coughing and sneezing B) Mucociliary blanket C) Alveolar macrophages D) All of the above
Moving genes from one organism to another is often referred to as ________.
Fill in the blank(s) with the appropriate word(s).