Based solely on random assortment, how many possible different genetic combinations exist: (a) when a human egg is produced by meiosis? when a human sperm is produced by meiosis?

25. A biogenic sediment can be composed of all the following except bones rocks shells dead fish

What are the possible outcomes of combining a lower with green leaves (GG) and green/red leaves Gg) with a Co-Dominance relationship? a. 3 Flowers with green leaves and 1 with red leaves b.

write a paragraph about "how the atoms in sugar molecules can be used to form amino acids and other large carbon-based molecules."

The failure, till now, to produce an effective AIDS vaccine may be due to the fact that the causative agent mutates continuously thus it is practically impossible for the body immune system to take advantage of vaccination. A. True. B. False

In which phase of the eukaryotic cell cycle is the genetic material duplicated A. G1 phase B. S phase C. G2 phase D. M phase

Which statement best describes the relationship between activation energy and rate of reaction? O Increasing the activation energy can increase the rate of a reaction. O Reducing the activation energy can increase the rate of a reaction.

Definition: this is a haploid cell with half the reproductive information from the parent.

Does a cell use energy when molecules diffuse in or out of the cell? Why?

Below is a list of possible challenges. Check all errors that you mentioned in your answer. Traits other than beak type might affect natural selection. It could take many generations to observe adaptions to a population.

A farmer dug a well but did not find any water Which reasons most likely explain why the farmer did not find water? Check all that apply.