A scientist mates two different organisms, She observes no offspring. A closer inspection reveals that the hybrid embryo does not develop properly. This is an example of
A - Gametic isolation
B - Low hybrid viability
C - Hybrid infertility
D - Hybrid zygote abnormality
E - Mechanical isolation
Answer: D - Hybrid zygote abnormality
This is when the hybrid zygote fails to mature normally, normally this means they die during development.