7th Grade Review

Carrie is studying the genes of two fruit flies in her lab. She knows what alleles they have.  She wants to know the potential combination of alleles their offspring could inherit.  Which of these choices would help Carrie identify the potential combinations?

• a carrier
• a pedigree
• an allele
• a Punnett Square

Which kind of mutation has occurred during the DNA replication shown in the diagram?

• substitution
• deletion
• insertion
• transcription

Look at the diagram shown below.  Which of these choices gives the correct ratio for the offspring predicted by the diagram?

• 1 BB : 1 BB
• 2 BB : 1 Bb
• 1 BB : 1 Bb
• 1 BB : 2 Bb

Which of the following is true of a man who is color blind?

• he will pass on this allele to all of his children
• he inherited one allele for color blindness from his mother
• he inherited two alleles for color blindness from his father
• he has one allele for color blindness and another allele for normal vision

Look at the diagram below. The alleles for the parents are missing.  What are they?

• dd and dd
• DD and Dd
• DD and dd
• Dd and dd

Which of the following  statements about pedigrees is true?

• pedigrees can only be used to trace the occurance of dominant traits
• boxes typically represent males and circles typically represent females
• pedigrees show all the allele combinations that are possible on a cross
• shaded shapes typically represent people who do not have a specific trait

Alisha and Rob would like to have children.  A genetic counselor tells them that they are both carriers of a certain genetic disease.  What does this mean?

• They both have an allele for the disease and could pass it on to their children, even though neither of them has the disease
• there is a very high probability that one or both of them will develop the disease at some point in time

What is the IV in the following hypothesis?
"If I spend more time studying, then my grades in science will improve."

• playing soft music in the background
• location for studying science
• time spent studying
• improvement in grades

The main goal of biotechnology is to use living organisms and biological processes to improve life on Earth.  Which example would be most beneficial to global populations?

• engineering of yeast to contain an enzyme used for making cheese
• engineering of rice crops to withstand flooding and contain more nutrients
• engineering of fruits so they can ripen slower and can be shipped farther
• engineering of eggplant to make it produce fruit in winter

The man who studied genetics and came up with genetics is

• Watson
• Crick
• Mendel
• Darwin