Indicate the completely correct statement about human races
All human races can interbreed but most will produce infertile young ones
Different human races cannot interbreed
Some human races can interbreed
All human races can interbreed and produce fertile offspring
One of the following appeared on the earth with the coming of the plants and was absent in the past
How many years ago abiogenesis occurred
All the following are examples of homologous organs, except
In lysogenic state viral $DNA$