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Have-a-Java Quiz 5 - Genetics:
 
1. The "father" of genetics is considered to be:
    A) Charles Darwin
    B) Gregor Mendel
    C) Albert Einstein
    D) Louis Pasteur

 
2. A section of DNA that codes for one particular trait is referred to as one:
    A) gene
    B) chromosome
    C) chromatid
    D) nucleus

 
3. If fur colour in mice is caused by the following: B = black and b = brown, choose the genotype for the organism which will have brown fur.
    A) BB
    B) bB
    C) bb
    D) either answer A or B

 
4. What is the name for the diagram one draws in genetics problems to determine the types of offspring produced by crossing two parents?
    A) karyotype
    B) matrix
    C) x vs y graph
    D) Punnett square

 
5. Down Syndrome (trisomy 21) is a genetic disorder in which the afflicted individual:
    A) inherits one more gene than normal
    B) inherits one less gene than normal
    C) inherits one extra chromosome #21
    D) inherits one less chromosome #21

 
6. Assume that in mice, B = black fur, b = brown fur. If a heterozygous black mouse mates with a homozygous brown mouse, what percent of their offspring will have black fur?
    A) 25%
    B) 50%
    C) 75%
    D) 100%

 
7. Which event in meiosis involves the exchange of genetic material between chromosomes?
    A) crossing over
    B) DNA replication
    C) cytokinesis
    D) amniocentesis

 
8. Which of the following gives the correct order of stages in mitosis?
    A) metaphase, prophase, anaphase, telophase
    B) telophase, anaphase, prophase, metaphase
    C) metaphase, prophase, anaphase, telophase
    D) prophase, metaphase, anaphase, telophase

 
9. The molecules on the red blood cell membranes that make up a person's blood type are:
    A) phosphates
    B) lipids
    C) nucleotides
    D) antigens

 
10. Which of the following genotypes could NOT represent an individual with type B blood?
    A) AB
    B) BO
    C) OB
    D) BB

 
11. Which one of the following would have a different phenotype from the others?
    A) Rr
    B) rR
    C) rr
    D) RR

 
12. A female carrier for hemophilia would be indicated as:
    A) XHXh
    B) XHXH
    C) XHY
    D) XhY

 
13. A male afflicted with hemophilia would be indicated as:
    A) XHXh
    B) XhXh
    C) XHY
    D) XhY

 
14. Human body (somatic) cells contain ____ chromosomes; and the gametes (sex cells) contain _____ chromosomes.
    A) 23; 46
    B) 46; 23
    C) 46; 46
    D) 23; 23

 
15. An alternate form for a gene is called a(n):
    A) allele
    B) chromosome
    C) chromatid
    D) chromatin



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