Exam 14: Chromosomes and Human Inheritance

In humans, an X-linked disorder called coloboma iridia (a fissure in the iris) is a recessive trait. A normal couple has an afflicted daughter. The husband sues the wife for divorce on the grounds of infidelity. Would you find in his favor?

Choose the most appropriate answer for each.​ -inversion

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.

Match the cause with the disorder.​ -hemophilia A

The human has __________ sets of autosomal chromosomes.

Answer the following questions in reference to the five items listed below.​ -Following a gene duplication event involving only five loci, how many chromosomes will a human female have?

Figure 14.3 -Which of the following is the genetic condition observed in the woman on the left in the above figure?

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.​ -A small region of a protein from three species is sequenced and found to be as follows: Species X is alanine, glycine, threonine, alanine Species Y is alanine, glycine, threonine, alanine Species Z is alanine, valine, glycine, threonine, alanine The difference in the amino acid sequence of species Z is most likely due to this.

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.

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

-The accompanying figure represents which chromosomal change?

What can be said about sex-determination in humans?

Explain why Duchenne muscular dystrophy (DMD), a recessive condition, most commonly occurs in boys.

Red-green color blindness is an X-linked recessive trait. Two normal-vision parents have a color-blind son. Indicate the genotype and phenotype of each parent and the son.

Males that tend to be taller than average and show mild mental impairment may have​

Choose the most appropriate answer for each.​ -monosomy