Exam 23: Patterns of Gene Inheritance

If one parent has type B blood and the other has type AB,what type might the child have?

In a testcross,an organism with a dominant phenotype,but unknown genotype is crossed with which of the following to establish its genotype?

When two or more sets of alleles affect the same trait in an additive fashion,it is termed

Indicate the genotypic and phenotypic ratios that you could expect if an individual who is heterozygous for Huntington disease has children with a normal individual.

If you were to breed a black male guinea pig to a brown female guinea pig in an attempt to determine which one was homozygous dominant and which one was homozygous recessive,how could you be certain that the guinea pigs are truly homozygous?

Which of the following is an example of the blending of phenotypes?

In which kind of cross would you expect to have your actual results match the predicted results 100% of the time the cross is made?

Which genetic disorder is associated with a defect in the elastic connective tissue protein called fibrillin?

Which of the following crosses will yield 4 phenotypes in the 1:1:1:1 ratio?

You have two true-breeding rose bushes,one with red flowers and one with white flowers,a cross between these two roses yields a bush with pink flowers.What condition does this demonstrate?

If you had a black male guinea pig and a brown female guinea pig,but you didn't know which was the dominant characteristic,how would you find out the dominant color?

In cattle,consider that the lack of horns is dominant to the presence of horns.A bull without horns is crossed with a horned cow.Of four offspring,one is horned and the other three lack horns.The bull is

In humans,assume red hair is recessive to dark hair.What are the chances of a dark-haired couple having a red-haired child if each had a red-haired parent?

Mendel carried out most of his research with

The leaves of a maple tree vary in size depending on the location of the leaves on the tree.Those growing at the outer region of the tree tend to be smaller than those growing closer to the trunk of the tree.This allows leaves that are growing in the shade to have a larger surface area.This show that genes have the ability to

In 1940,two researchers named Weiner and Landsteiner discovered that about 85 percent of the human population sampled possessed a blood cell protein called the Rh factor.The presence of Rh factor was labeled Rh positive (Rh⁺)and was found to be dominant over the absence of the blood factor (Rh^-).Under normal Mendelian inheritance,which of the following statements is/are false?

Two parents with widow's peak and short fingers have a child with a continuous hairline and long fingers.What are the genotypes of the two parents? (W = widow's peak; S = short fingers)

A man with blood type AB could NOT be the father of a child with

Humans can have any of several eye colors,this is because we possess a variety of

Which of the following crosses will yield four phenotypes in a ratio of 9:3:3:1?