Exam 7: Patterns of Inheritance

Two genes control fur color in Labrador retrievers.The first gene determines whether the pigment to be deposited in the hairs will be black or brown.The second gene determines whether the pigments are put into the dog's hairs at all.A dog homozygous for the recessive allele of this second gene will be yellow because no pigment is deposited in its hairs.This is an example of

The figure shown below indicates two diseases with genetic links that are common in industrialized nations.The fact that both are about 80-90 percent avoidable indicates that

The observation that individuals afflicted with albinism also always have vision problems is an example of

If you were a scientist studying patterns of inheritance in dogs and you were given extensive information about the inheritance of multiple physical traits,such as hair color and height,would you be able to piece together the entire genome of dogs? Explain your answer.

Which of the following statements is NOT true?

Which of the following might explain how two separate genes control a single trait?

An allele is

Which of the following statements is a basic summary of one of Mendel's laws?

Match a mode of inheritance to a statement listed below. -A human's ability to roll his or her tongue is dependent on a single gene that is either dominant or recessive.

The leaf color of a certain plant is controlled by one gene.For that gene,the allele G = orange and g = green.You have a plant with orange leaves but do not know whether that plant's genotype is GG or Gg.Which of the following would help you determine the plant's genotype?

A hammer is needed to pound nails into a board.Even if one has the nails,they cannot be used without first getting ahold of a hammer.This is similar to the genetic relationship known as

Match the following terms with their definitions. -a section of DNA that controls a genetic trait

One of the first medical tests a newborn receives determines if the child has phenylketonuria (PKU).PKU is the result of a mutation in a single gene that causes mental retardation and a host of other phenotypes (light hair and skin color,eczema,and a "mousy" smell).By detecting PKU early,doctors are able to reduce the effect of this condition with a modified diet.PKU is an example of

Match a mode of inheritance to a statement listed below. -A parent with curly hair and a parent with straight hair produce a child with wavy hair.

Why did Mendel analyze thousands of plants while conducting his research?

How is Mendel's law of segregation represented in a Punnett square?

Most human genetic characters are

If Gregor Mendel had studied a polygenic trait that did not follow the straightforward single-gene,single-phenotype pattern,do you believe he would have been able to describe how genes are passed from parents to offspring? Justify your answer.

Mutations will affect the

The figure shown below indicates two Labrador retrievers that are both homozygous recessive for fur color.One dog is brown and the other is yellow due to