The hydrogen bonds between complementary nucleotides is what keeps the two strands of a DNA helix together.
Answer:
Steven has heterozygous genotype.
Explanation:
Tongue rolling is a dominant trait, that means the trait can express itself at the homozygous dominant and as well as in the heterozygous condition. The recessive homozygous condition is not able to express this trait.
Steven can roll his trait, this means his genotype is either homozygous dominant or heterozygous. The wife is recessive for the trait. Their son cannot roll his tongue, this means the Steven is heterozygous dominant. If the Steven is homozygous dominant his son will be able to express the trait.
Thus, the answer is Steven has heterozygous genotype.
Answer:
The seismic waves in a 6.1 magnitude earthquake are 1000 times larger than those in a 3.1 magnitude earthquake
Answer: Food
Explanation: Organisms get the energy they need through food. Some organisms, called autotrophs, create their own food using photosynthesis.