Answer:
one common ancestor
Explanation:
Although Darwin’s theory is often described as the theory of evolution by natural selection, most commentators recognize that common ancestry (the idea that all organisms now alive on earth and all present day fossils trace back to one or a few “original progenitors”) is an important part of the Darwinian picture.
Answer:
1/16 are ovoid
Explanation:
Hello!
From an AaBb genotype we can obtain four possible gametes AB, Ab, aB and ab. With the Punnett square we can observe the crossing. In the second Punnett square we can see the form A– B–
AB Ab aB ab
AB AABB AABb AaBB AaBb
Ab AABb AAbb AaBb Aabb
aB AaBB AaBb aaBB aaBb
ab AaBb Aabb aaBb aabb
AB Ab aB ab
AB A-B- A-B- A-B- A-B-
Ab A-B- A-bb A-B- A-bb
aB A-B- A-B- aaB- aaB-
ab A-B- A-bb aaB- aabb
The genotypes of the form A– B–, A– bb and aa B– have triangular seed capsules (15 of 16), while the seed capsules of the aa bb genotypes are ovoid (1 of 16).
Successes with your homework!
Yes, decomposers have predators. A worm is a decomposer, but it's predator is birds.
Answer:
Ideally, the experimental and control groups are identical. As much as possible, the two groups should overlap in every characteristic.
Explanation:
At the beginning of your study, you need your two groups to be as statistically similar as is humanly possible. That way, when you control for other variables, you can reasonably attribute any statistically significant differences at the end of the study to your intervention.
Answer:
B. Carbohydrates provide energy for living things.
Explanation:
