Lions and tigers can interbreed and produce offspring called tiglons or ligers, which have normal life spans but are sterile. Lions and tigers remain isolated genetically because of
A) mechanical incompatibility.
B) heterozygote disadvantage.
C) hybrid infertility.
D) hybrid inviability.
E) behavioral isolation.
C
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When an impulse is traveling toward a negative electrode, this will appear as a(n) _________ deflection on the ECG.
Fill in the blank(s) with the appropriate word(s).
The capillaries clustered around kidney tubule
cups differ from other capillaries in that they
a. have a much wider diameter. b. are much leakier. c. have arterioles at either end. d. carry lymph with blood. e. have more than one of these characteristics
Stem cells developed by inserting genes that regulate the transcription of specific genes into cells from an adult are ________ cells
A) induced pluripotent stem B) embryonic disk C) gastrula D) chorionic villi E) embryonic stem
Fermentation in yeast can produce ATP from sugar anaerobically without using any _____ and producing ____+______
Fill in the blank(s) with correct word.