Answer:
each of the two daughter DNA molecules contains one strand from the original DNA molecule and one newly synthesized strand.
Explanation:
DNA replication is a semi-conservative process. The two parental DNA strands are separated from each other by the action of helicases. The separated DNA strands serve as the template. Primase enzyme forms primers which are elongated by DNA polymerase enzymes. These enzymes elongate the primer by the addition of deoxynucleotides complementary to the sequence of the template DNA strand.
Therefore, DNA replication forms two DNA double helices from one parental DNA molecule. Each of the daughter DNA molecules contains one parental DNA strand and one newly formed DNA strand making the process semi-conservative.
Explanation:
Plant) Banana
Trait: Smaller seeds, larger fruit, thinner skin
People breed plants to gain desired produce with more yield. After years of genetic nurturing, the perfect bananas were created with smaller seeds, larger sizes, and an offspring with greater abundance for maximum profit.
Animal) Chihuahua
Trait: Smaller size
Chihuahuas are a great example of artificial selection in a domesticated animal because over time people successfully breaded different dogs to acquire the size of the chihuahua.
Answer:
to provide energy, store energy, build macromolecules, and spare protein and fat for other uses
Explanation:
Without genetic variation there would not be evolution. genetic variation sometimes is a result of a change in the environment. some variation occurs to help the animal better survive in their habitat. maybe there was a disruption in their ecosystem and their species will become vulnerable unless they change somehow