Gap genes, segment-polarity genes, and homeotic genes all _____
A) act independently of one another
B) code for transcription regulatory factors
C) can be activated at any time during development
D) are unique to Drosophila embryos
Answer: B
You might also like to view...
If the syringe contains live R strain and heatkilled
S strain Streptococcus pneumoniae a. the mouse will live. b. live S strain bacteria will be detected in the mouse's blood. c. the mouse's blood will contain live pathogenic R strain bacteria. d. The dead S strain bacteria will transform to live R strain bacteria. e. DNA from the live R strain bacteria will revive the dead S strain bacteria.
Which gland(s) secretes epinephrine and norepinephrine?
1.Adrenal cortex 2.Adrenal medulla 3.Anterior pituitary 4.Pineal gland
Photosynthesis takes place in a specialized tissue of the leaf called
A. cuticle B. mesophyll C. stomata D. petiole
What would life on Earth be like today if eukaryotic protists had not evolved?
What will be an ideal response?