Color blindness is an X-linked recessive gene. Two normal-vision parents produce a color-blind child
(a) Is this child male or female?
(b) What are the genotypes of the parents?
(c) What are the chances that their next child will be a color-blind daughter? What will be an ideal response?
ANSWER: (a) Male
(b) Cc ' CY
(c) no chance to produce a color-blind daughter
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Repressors
A. are involved in negative control. B. are involved in positive control. C. always bind to the promoter. D. bind or do not bind to the operator depending on their shape (conformation). E. are involved in negative control AND bind or do not bind to the operator depending on their shape (conformation).
The ____ absorb nutrients through their plasma membranes and lack food vacuoles
a. golden algae b. apicomplexans c. dinoflagellates d. diatoms e. red algae
Which of the following types of skin damage are the most superficial?
A) first-degree burns B) second-degree burns C) third-degree burns D) All of these have the same level of pain.
The transfer of polypeptides into the ER is called
A) transit sequence import. B) post-translational import. C) cotranslational import. D) endoplasmic import. E) ribosomal import.