Modern Genetics

This substance is a type of biomolecule and is made of base pairs in the shape of a double helix.

• DNA

• Alleles

• RNA

• Chromosomes

What are the four nitrogen bases?

• Adenine, Thymine, Guanine, Cytosine.

• Heterozygous, Homozygous, Homo sapiens,

• A, B, AB, O

• Nitrogen, Oxygen, Fluorine, Carbon

Guanine always pairs with_________?

• Thymine

• Cytoplasm

• Adenine

• Cytosine

What are genes?

• Genes are only the X and Y chromosomes.

• A segment of DNA that is on a chromosome.

• A article of clothing made of denim.

• Adenine, thymine, Guanine, Cytosine.

What is a phenotype?

• A phenotype is what determines a Childs sex.

• A phenotype is the genotype.

• It is when the X and Y chromosomes combine.

• The observable characteristics of a trait.

What is the percent chance that the offspring will end up with the genotype RR?

• 25%

• 75%

• 50%

• 100%

If a person with a blood type O has a baby with a person whos blood type is heterozygus type A, what is the percent chance they will have a baby with type O blood.

• 25%

• 50%

• 100%

• 75%

What is codominance?

• Codominance is when two dominant alleles both can be seen in the phenotype at the same time.

• Codominance is when a red flower and a white flower produce a pink flower offspring.

• Codominance is when neither trait can mask the other creating a mixed or diluted appearance.

• Codominance and incomplete dominance are the same thing

What is the Punnett square depicting?

• Weak dominance

• Codominance

• Incomplete dominance

• No dominance

What type of dominance is depicted in this Punnett square?

• Passive domination

• Total domination

• Codominance

• Incomplete dominance