Answer:
It greatly affect population of fish.
Explanation:
If there were no shrimp in the close ecosystem then many fishes die due to lack f food because shrimp is the food of many small and large fishes. They also play a great role in protection of fish's skin by eating parasite, bacteria and fungi present on their skin so it also act as scavengers so if these shrimps are not present many fishes die due to various diseases and the ecosystem would be disturb.
Answer:
Fungi is mostly single-celled but can also be multi-celled.
Explanation:
1) Embryonic stem cells can become all cell types of the body because they are pluripotent (that means having the ability to originate almost every type of cell in the body). On the other hand, adult stem cells are more limited and can only differentiate into different cell types of the same tissue. For example, if the tissue is skin, they would differentiate in keratinocytes, melanocytes, etc. We can say that adult stem cells are multipotent because they can become more than one type of cell.
1.1
Advantages of embryonic stem cells:
-They can grow easily in culture
-Originate almost every type of cell in the body with the right stimuli
Advantages of adult stem cells:
-Adult stem cells that come from this patient and then are reintroduced in him are less likely to initiate rejection after transplantation.
- They are present in a lot of tissues/organs: bone marrow, brain, blood vessels, muscle, skin, heart, and many more.
1.2 Disadvantages of embryonic stem cells:
- They are obtained from human embryos and because of that they are destroyed during the process
-There is not enough information obtained to understand this cells completely.
Disadvantages of adult stem cells:
-It's difficult to isolate these cells from the rest of the tissue
It'sts not easy to have a big number of them in cell culture
(these are a problem because it needs to exist large numbers of these cells to be used in replacement therapy for this patient.)
2)
<span>The answer is: During differentiation, certain genes are activated to produce proteins that enable specific functions.
</span>During the differentiation process, some parts of the cell genome will be activated or expressed, while others parts will have it repressed. The part that was activated will lead to translated proteins that will help dictate the shape of the cell as well as their function. This is a process of gene expression and can be activated or repressed by stimuli from the inside or outside of the cell.
3. The answer that BEST explains is Meiosis results in offspring with genotypes that are not exact copies of the parents.
Something that differentiates meiosis from mitosis is the fact that the new cells have different genetic information due to the recombination of genetic material from the parents. This will make the offspring different from the parents. Also, a process that helps mixing the DNA is Crossing over. Crossing over. is an exchange of DNA between homologous chromosomes (half are from the mother and the other half from the father).
Answer:
LLgg, Llgg , two out of 16
Explanation:
Given,
Dominant - Long wings and Gray color
Recessive - Short wings and Brown color
Let the allele for long wings be "L" and the allele for short wings be "l".
Let the allele for brown color be "g" and allele for gray color be "G"
Genotype of parents
LlGg
Gametes of the parent
LG, Lg, lG, lg
Dihybrid cross is between LlGg and LlGg
The offspring produces will be as follows -
LG Lg lG lg
LG LLGG LLGg LlGG LlGg
Lg LLGg LLgg LlGg Llgg
lG LlGG LlGg llGG llGg
lg LlGg Llgg llGg llgg
Offspring with long wings and brown color – LLgg, Llgg , two out of 16
Answer: Imagine life without your best friend. Who would you hang out with and talk to about your problems? Life would be so lonely! You rely on your friends for companionship, fun, and support. Animals rely on each other, too. Some have lifelong relationships with other organisms, called symbiotic relationships. There are three different types of symbiotic relationships: mutualism, commensalism, and parasitism.
Mutualism: both partners benefit. An example of mutualism is the relationship between the Egyptian plover and the crocodile. In the tropical regions of Africa, the crocodile lies with its mouth open. The plover flies into its mouth and feeds on bits of decaying meat stuck in the crocodile’s teeth. The crocodile does not eat the plover. Instead, he appreciates the dental work. The plover eats a meal and the crocodile gets his teeth cleaned. Coincidentally, the Egyptian plover is also known as the crocodile bird.
Commensalism: only one species benefits while the other is neither helped nor harmed. For example, remora fish are very bony and have a dorsal fin (the fin on the back of fish) that acts like a suction cup. Remora fish use this fin to attach themselves to whales, sharks, or rays and eat the scraps their hosts leave behind. The remora fish gets a meal, while its host gets nothing. Selfish, sure, but neither gets hurt.
Parasitism: One organism (the parasite) gains, while the other (the host) suffers. The deer tick is a parasite. It attaches to a warmblooded animal and feeds on its blood. Ticks need blood at every stage of their life cycle. They also carry Lyme disease, an illness that can cause joint damage, heart complications, and kidney problems. The tick benefits from eating the animal's blood. Unfortunately, the animal suffers from the loss of blood and nutrients and may get sick.
