In humans, an estimated 60 to 80 percent of fertilized eggs self-destruct before becoming babies, which is why the people who kill the most embryos are those like the Duggars who try to maximize their number of pregnancies.

Which prevent errors in dna replication? a. helicase enzyme checks the dna for errors. b. each base can attach to only one other type of base. c. ribosome enzymes prevent errors from happening. d. dna contains no complementary base pairs.

The mitochondrion functions lipid storage protein synthesis photosynthesis dna replication atp synthesis

Ascientist and her team counted 200 individual deer in an area of 10 square kilometers. what is the population density?