Exam 14: Chromosomes and Human Inheritance

Answer the following questions in reference to the five items listed below. -How many chromosomes are present in each cell of the germ cell line for a tetraploid species whose diploid complement of chromosomes is 48?

Who is a carrier of an X-linked trait?  

Match the cause with the disorder. -red-green color blindness

Match the cause with the disorder. -Turner syndrome

Select the best process listed below for each of the following statements. Note that you need to know that the sequence of amino acids directly reflects the sequence of genes that coded for their placement. -Homologous sets of genes ABCDEF and AEDCBF are located on homologous chromosomes.

A rare or uncommon version of a trait that is not life-threatening,such as having six fingers on one hand,is called a(n)______.  

Match the cause with the disorder. -hemophilia A

In achondroplasia,a ____________ condition could result in severe skeletal malformations that are lethal before birth or shortly after.

Color blindness is an X-linked recessive trait.Two normal-vision parents produce a color-blind child.The child's sex is _____________.

The failure of chromosomes to separate during mitosis or meiosis is called  

Down syndrome involves trisomy ____.  

Select the disorder that best matches each the following statements. -This disorder is due to a sex chromosome abnormality probably caused by nondisjunction of sex chromosomes at meiosis.

Duchenne muscular dystrophy (DMD),a recessive condition,most commonly occurs in boys.This pattern of inheritance is ________________.

A transfer of genes between non-homologous chromosomes is known as  

Huntington's disease is a late-onset autosomal dominant disorder.What is the chance that a heterozygous woman with the disease will pass the affected allele on to her children?  

Human skin color is an outcome of interactions among the products of about how many genes?  

Single-gene disorders are described by all of the following except  

Select the disorder that best matches each the following statements. -This disorder is an X-linked recessive trait.

Achondroplasia ____.  

Select the best process listed below for each of the following statements. Note that you need to know that the sequence of amino acids directly reflects the sequence of genes that coded for their placement. -Homologous sets of genes ABCDEF and ABCDEF are located on nonhomologous chromosomes.