Genetics Unit Review part 2

What are the parts of a nucleotide?

• phosphate group, sugar, nitrogen base
• phospholipid, amine group phosphate group
• nitrous, ribose, phosphat
• glucose sugar, amine group

What is the role of tRNA in the making of proteins?

• tRNA stores the information for making proteins
• tRNA carries the correct amino acid to the polypeptide chain
• tRNA reads the gene and makes the protein
• tRNA is a copy of the DNA information

DNA is put into a viral vector and given to a patient in order to replace a defective gene in a target tissue. This treatment is called...

• gene therapy 
• gene splicing
• gene duplication
• gene mutation

Farmers have been doing this for thousands of years to get animals and plants with desired traits. 

• choosing parents with desired traits (selective breeding) 
• cloning parent organism that have desired traits
• genetic engineering to give organisms desired traits
• making transgenic organisms with desired traits

A man with Huntington's disease is heterozygous for the trait. If he has children with a woman who does not have huntington's, what is the percent chance of their offspring having Huntington's disease? 

• 25%
• 50%
• 75%
• 100%

The gene for yellow flowers (Y) is dominant to the gene for white flowers (y). Two yellow flowers are crossed and have a white offspring. What are the parents genotypes?

• both YY
• both yy
• YY and Yy
• Yy and Yy

Colorblindness is an x-linked recessive trait. A woman who is not color blind marries a man who is not color blind. They have a color blind son. What is the mother's genotype.

• X^B X^B
• X^B X^b
• X^b X^b
• X^b y

Look at the human karyotype. This person...

• is a male with a normal set of chromosomes
• is a male with down syndrome
• is a female with a normal set of chromosomes
• is a female with down syndrome

What was the primary purpose of the Human Genome Project?

• To find out how closely related we are to other organisms
• To learn how to make transgenic humans
• To determine what mutations cause genetic diseases
• To find people with genetic disorders and keep them from reproducing