What are tissues?

A groups of tissues that work together

B basic units of structure and function

C groups of cells that perform the same function

D multiple organs that perform a major function

A physical characteristic that is passed down from one generation to the next?

What directs cellular activities

In chickens, comb shape is determined by genes at two loci (R, r and P, p). A walnut comb is produced when at least one dominant gene R is present at one locus and at least one dominant gene P is present at a second locus (genotype R_ P_).

Describe two communication differences between the nervous system and endocrine system.

What does the process of meiosis contribute to

Round seeds (R) is dominant to wrinkled seeds (r) in pea plants. What would the genotype of a homozygous recessive pea plant be?

Rhizobia are bacteria that live on the roots of some plants, such as legumes like pea plants. Rhizobia convert an element in the atmosphere into ammonia. Identify and explain the type of relationship this represents.

A scientist is carrying out replication of DNA artificially in her laboratory. What will she use to join the gaps on the DNA strand? (a.) the enzyme DNA polymerase (b.) the enzyme DNA ligase (b.) an artificial adhesive compound

Which part of an atom has most of its mass

One of the challenges of wind power is that the ___ of wind ___ day to day depending on weather conditions