Answer:
A. All possible combinations of alleles in the gametes produced by one parent are written along the top edge of the square
Explanation:
You begin with a square. Then, following the principle of segregation, all possible combinations of alleles in the gametes produced by one parent are written along the top edge of the square. The other parent's alleles are then segregated along the left edge. Next, every possible genotype is written into the boxes within the square, just as they might appear in the F2 generation.
<span>2. Different kinds of eukaryotes have different numbers of chromosomes.</span>
There are differences between Eukaryotic and Prokaryotic cells. This difference is considered to be the most important distinction between groups of organisms. A Prokaryotic cell does not contain a nucleus. It only contains one chromosome and is a single-celled organism. It was the only form of life on earth for millions of years. Examples of a Prokaryotic cell are the different types of bacteria present today.
A Eukaryotic cell contains a nucleus; more than one chromosome and is typically a multi-celled organism. Both plant and animal cells are eukaryotic cells.
Answer:
Physical
Explanation:
A physical change can be undone. A chemical change cannot. The frost on the grass will melt, therefore it can be undone.
A catalyst increases the rate of reaction by providing a metabolic pathway that requires less energy. There for they work by decreasing the activation energy of a reaction.
OPTIONS:
a. Bear populations would decline. b. Riparian vegetation would decline. c. Elk populations would decline.
Answer:
c. Elk populations would decline.
Explanation:
The gray wolf can be regarded as a keystone predatory species. The absence or decrease of the population of a keystone predator in an ecosystem largely has a negative impact on the balance of the ecosystem, as well as the population of other organisms in that ecosystem.
In the Yellowstone ecosystem, Elk population is controlled by the gray wolf, as they are hunted down by the gray wolf. As stated in the question, these elks that are being hunted by gray wolf, their carcasses serve as sources of food for the ravens, bears, and the eagles. This means, the presence of wolf in the ecosystem would make enough food available for these animals as their population increases.
What to be expected as the gray wolf is returned is that, the population of elk would decline, since gray wolf would hunt them down. Also, since elk population feed heavily on riparian vegetation, these vegetation would increase rather than decline.
