If two phenotypically normal parents have six children, and two daughters and two sons have the same genetic
disorder, that disorder is most likely to be ____.
a. hemophilia
b. cystic fibrosis
c. Marfan syndrome
d. muscular dystrophy
e. color blindness
b
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During primary succession, debris from rivers and runoff accumulates in a body of water, causing it to
fill in at its margins.
Indicate whether the statement is true or false.Which of the following statements is FALSE regarding a rightward shift in the hemoglobin-oxygen dissociation curve?
A) Affinity for oxygen is decreased. B) Hemoglobin unloading of oxygen is increased. C) It can be caused by a decrease in 2,3-BPG. D) Oxygen loading onto hemoglobin is decreased. E) A rightward shift usually occurs in active tissue.
Dizygotic twins are also called fraternal twins
___________________ Indicate whether the statement is true or false.
What is the general name given to the most highly condensed form of chromatin?
A. X chromatin B. euchromatin C. 30-nm chromatin fiber D. nucleosome E. heterochromatin