What structures of the male and female reproductive systems share a common embryonic origin?
A. cervix and ejaculatory duct
B. labia minora and penis
C. clitoris and scrotum
D. clitoris and penis
Answer: D
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Homeotic genes encode very important transcription factors that specify the identity of body parts or segments during development
For example, the development of legs on thoracic segments T1, T2, and T3 and wings on segment T2 is controlled by homeotic genes. A. true B. false
What can you conclude from these data?
Consider the pathway for the synthesis of the amino acid arginine in Neurospora:
Mutant strains of Neurospora may carry one or more mutations. Neurospora mutant strain b is grown on minimal media plus supplements as shown. Growth is shown by (+) and no growth is shown by (o).
A) Strain a has only one mutation and it is in ARG-E.
B) Strain b has only one mutation and it is in ARG-H.
C) Strain a has a mutation in ARG-F and strain b has a mutation in ARG-E.
D) Strain b has mutations in ARG-E, ARG-F, and ARG-H.
What form of gene therapy involves direct injection of DNA into cells within the body?
A) In situ hybridization B) In vivo C) In vitro D) Ex vivo E) Liposome mediated
During the luteal phase, a(n) __________ forms from follicle cells that surround the egg.
Fill in the blank(s) with the appropriate word(s).