Test 2 will cover the lecture notes on chapters 5, 6, 7 & 8.

1). What is meant by metastasis? ________________________________________

2). The DNA in a cell is organized into:
    a) centromeres    b) chromosomes    c) chromocytes    d) hematocrit

3). During which stage in the cell cycle is the DNA replicated? __________

4). Which stage of mitosis has all the chromosomes lined up in the center
    of the cell?
    a) telophase   b) anaphase   c) metaphase   d) prophase
	
5).  Which enzyme makes cancer cells immortal? _________________________

6).  During which stage in meiosis is the chromosome number halved?
     a) Prophase I   b) Prophase II   c) Anaphase I   d) Anaphase II

7).  What is angiogenesis ? ________________________________________

8).  How many different types of sperm or egg are produced by independent
     assortment?
     a) 46     b) 5,200   c) 8 million   d) 70 trillion


9).  What is meant by a recessive allele? _________________________________


10). Which if the following is homozygous dominant genotype?
	a) G G		b)  G g		c) g g		d) none of these

11). Which is the following is always true of a genetic disease caused by a
     dominant gene?
     a) it will be very common in the population
     b) if both parents suffer from the disease, all the children
         must inherit the disease
     c) if a child has the disease, at least one parent must also
        have the disease
     d) the disease can skip generations


12). What is meant by quantitative traits? ________________________________
	

13). A trait has a heritability of 60%, how much of the variation is caused
     by genes?
     a) 40%      b) 60%	     c) 20%     d) 80%

14). Which blood group can receive blood from anyone?
     a) O       b) A       c) B       d) AB

15)  What is meant by autosomal? __________________________________

16). People with Down syndrome have an extra copy of chromosome:
     a) 16      b) X       c) 21       d) 22       e) 23

17). What is PCR used for? _______________________________________


18). Roughly what percentage of corn grown in the US is GM
     (genetically modified)?
     a) 10%     b) 25%     c) 50%     d) 80%


19). What happens during transcription? _____________________________


20). What are two potential applications for genetic engineering?
     1.______________________________________________________________

     2.______________________________________________________________

21). What molecule bring amino acids to the ribosome during protein synthesis?
     a) rRNA     b) mRNA     c) tRNA     d) pRNA

22). Golden rice is more nutritious than regular rice, it has high levels of:
     a) Vitamin A   b) Vitamin B12   c) Vitamin D   d) Iron

23). What is one potential problem with GM crops?
     ____________________________________________________________________

24). The first mammal to be artificially cloned was a __1__ in the year __2__.
     a) cow ; 1983   b) sheep ; 1997   c) cow ; 1997   d) sheep ; 1983

25). What part of the body contains adult stem cells? ________________