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If height were entirely genetically controlled, what concordance would you expect between monozygotic twin pairs?


  1. Based on Rosa’s symptoms, which parts of her brain may have been affected by Alzheimer’s disease? 
  2. How are messages sent between cells in the nervous system? What molecules are involved in this process? In what ways can drugs alter this process? 
  3. Why can’t Rosa’s brain simply grow new cells to replace the ones that have died? 
  4. How do certain classes of drugs help with neurotransmission in the brain? Could this help Rosa? 

A cross was made between pure breeding plants differing in two characters (colour and shape of seed) and the progenies were intercrossed to produce F2 population. Four types of phenotypes; yellow round (1200), yellow wrinkled (386), green round (372) and green wrinkled (144) were observed in F2. Use the chi-square test to determine if these results are due to independent assortment 


A cross was made between pure breeding plants differing in two characters (colour and shape of seed) and the progenies were intercrossed to produce F2 population. Four types of phenotypes; yellow round (1200), yellow wrinkled (386), green round (372) and green wrinkled (144) were observed in F2. Use the chi-square test to determine if these results are due to independent assortment. 


How do motility and secretions of the stomach contribute to the digestive process?


explain why mismatch repair is the more important for the accuracy of DNA Replication

can we consider the mammalian musculoskeletal as the superior skeletal and muscular systems? explain


If DNA of a particular species was analyzed and it was found that it contains 27 percent A, what would be the percentage of C?


Discuss gene expression with respect to energy efficiency to each mechanisms during transcription and translation

Discuss what happens when an individual with 17 chromosomes mates with an individual of the same species with 16 chromosomes


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