Exam 20: Patterns of Genetic Inheritance

How is familial hypercholesterolemia inherited?

The square that is used to make all the possible combinations of gametes is called a Punnett square.

In the inheritance of skin color example in the book,which genotype would have the same phenotype as AaBb?

In a cross of a homozygous dominant parent and a homozygous recessive parent,what is the ratio of offspring that will exhibit the recessive phenotype?

When you describe a person as having attached ear lobes,you are describing their genotype.

Most polygenic traits show discrete phenotypes when plotted on a graph.

If a mother is color-blind and her husband is not,which of the following children are not possible?

In a dihybrid cross,if the resulting ratios are 1:1:1:1,what are the genotypes of the parents?

Which of the following represents a gamete with a dominant allele?

If you want to know the probability that tossing two coins will result in a particular outcome (two heads,for example),you use the

If the mother's genotype is aa,all of her eggs will be identical for this trait.

In an X-linked dominant trait,affected males pass the trait only to daughters.

It is estimated that there are fewer than 100 genetic diseases caused by single gene mutations in humans.

Which of the following disorders is caused by a defect in the production of an elastic connective tissue protein called fibrillin?

Even though sickle-cell disease is inherited as an autosomal recessive disorder,the heterozygote can express some variation of the recessive phenotype.

Which of the following represents a cross to determine if an individual is homozygous or heterozygous dominant?

The probability of tossing a coin and having it be heads or tails is

Which of the following genotypes is heterozygous?

Can two parents that have a genetic disorder ever have a normal child?

Which of the following is not a characteristic of an autosomal recessive disorder pedigree?