Exam 6: Patterns of Inheritance

________ dominance is expressed in a genetic cross in which the heterozygous phenotype is intermediate between the two homozygous phenotypes.

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

Which of the following represents all of the possible gametes that can be formed by an individual with the genetic makeup FfGgHH?

The individual who used data from breeding garden peas to discover the patterns of inheritance that form the foundation of modern-day genetics was ________.

In a particular plant,two genes control leaf shape and color.Round leaves (R)are dominant to jagged leaves (r).Yellow fruits (Y)are dominant to white fruits (y).A true-breeding round-leaved,yellow-fruited plant is mated with a jagged-leaved,white-fruited plant.What are the genotypes of the plants involved in this cross?

A Punnett square is used to

Differentiate between pleiotropy and polygenic traits.

The observable physical characteristics of an organism are known as its ________.

Mendel's laws of segregation and independent assortment both have their biological basis in events that take place during

Which of the following did Mendel use to help him form the law of independent assortment?

The genetic makeup of an organism,such as Gg,is its ________.

Which of the following expresses Mendel's law of segregation?

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.

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

In the Punnett square shown below,the lettered circles on the top and left of the square (indicated by the arrows)represent the

Most traits in humans involve complex inheritance where the trait is governed by the action of more than one ________.

Which of the following statements regarding genes is NOT true?

When Mendel proposed the law of segregation,which of the following pieces of information did he NOT have?

Consider a gene with two alleles that show complete dominance.When two heterozygotes for this gene breed,they have a 25 percent chance of producing a homozygous recessive offspring.The next time these two individuals breed,what are the chances that they will once again have a homozygous recessive progeny?

The coat color in a Siamese cat is determined by a temperature-sensitive allele that allows the brownish pigment melanin to be produced in extremities of the body.What might explain this phenomenon?