Texas longhorn cattle have been bred to increase the tip to tip width of their horns. In the current generation, the mean horn length is 52 inches. If only a subset of this population, with a mean horn length of 62 inches, are allowed to reproduce, and the narrow-sense heritability of this trait 0.2. Required:
What approximately is the expected horn length in the offspring generation?

In which state was more than 100 billion tons of coal mined in 2005?

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.

Which of the following statements is accurate about evolution? question 10 options: natural selection only eliminates odd individuals. evolution means that a population never has changes in its genetic frequencies. mutations are always harmful. evolution means that a population undergoes changes in its gene frequencies over time.