Practice Quiz for Recombination

No. of Questions= 4
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1 Which of the following statements is true concerning the creation of new combinations of chromosomes in zygotes as a result of sexual reproduction?
     
a) It is a rare occurrence.
b) Both sperm and ova cells are a source of new combinations.
c) Sperm, but not ova, cells are a source of new combinations.
 
2 When chromosomes "cross-over" during the meiosis process, the result is:
     
a) new combinations of existing genes
b) a reduction in the number of genes that can be inherited
c) nothing changes
d) A and B
3 As a result of normal conception, which of the following is likely to occur?
     
a) Almost all offspring will have a unique combination of alleles.
b) Most children in the same family will have the same combination of alleles.
c) There is no chance or randomness in the inheritance of alleles from parents.
4 Human gametes normally have ____ chromosomes and zygotes normally have ____ chromosomes.
a) 22 and 44
b) 23 and 23
c) 23 and 46
d) 46 and 46

 


 

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