A farmer grows crops with an average height of 5 feet. He breeds his tallest plants, which are each 8 feet tall. They produce offspring that have an average height of 5.25 feet.
So, the heritability in this case is . The trait for height is .

The choices for the first blank line is. 0.08, 0.1, 0.5, 0.8

The choices for the second blank line is.
Completely influenced by the environment.
Completely influenced by genes.
Slightly influenced by the environment.
Slightly influenced by genes.

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

How can an organ, such as the lungs, work for multiple body systems?

Can someone give me the answer to this question? you so much