40 points! will give brainliest and 5 star vote! in steps 11-12, you saw that cystic fibrosis is caused when specific sections of both copies of chromosome 8 are deleted. on the basis of this information, do you think cystic fibrosis is a dominant or recessive trait? step 11: if you are making the model by hand: replace the cut chromosome with a normal-length chromosome. now cut off a portion of both copies of chromosome 7. deletion of specific sections of both copies of chromosome 7 results in cystic fibrosis. draw a labeled diagram of this model. step 12: if you are making the model using a paint program on your computer: using the file "normal," cut off a portion of both copies of chromosome 7. deletion of specific section of both copies of chromosome 7 results in cystic fibrosis. save this file under as "cystic fibrosis."

Rease is an enzyme used by plants to break down urea (a nitrogen-containing compound) into carbon dioxide and ammonia. urease urea > > > carbon dioxide and ammonia ammonia is broken down by plants into a nitrogen source plants need to grow. thus, plants could not use urea as a nitrogen source unless it was first converted to ammonia. in soybean plants there are two different kinds of urease, one produced in the seeds and the other produced in the leaves of the plant. three types of soybean plants were used in a set of experiments: normal soybeans and two mutant strains, one lacking the urease in the seeds only (strain 1) and one lacking urease in the leaves only (strain 2). experiment 1 separate areas in a field were planted with normal, strain 1, and strain 2 soybeans. all types of soybeans appeared to grow, flower, and produce seeds equally well. there were no externally detectable differences among the strains. experiment 2 small pieces of plant leaves of equal weight were obtained from each type of soybean plant and separately placed on media in culture dishes. tissue growing in this way will become an unorganized clump of cells referred to as callus. to provide a controlled nitrogen source, half the tissue samples of each type were placed on media containing urea, and the other half of the samples were placed on media containing ammonia. after 30 days, the weight gain for each of the callus samples was determined. results are shown in the table below.

Nucleic acids offer variability because they contain alternate forms of genes called .

Match the correct terms to their descriptions a system in which only energy but not matter is exchanged frozen water in snow part of geosphere that includes only soil a thin layer between the troposphere and the stratosphere cryosphere tropopause closed system pedosphere