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Softa [21]
3 years ago
12

Albinism is a recessive trait in humans that is controlled by a single gene. How many recessive alleles must a person have to ha

ve albinism
Biology
2 answers:
Airida [17]3 years ago
7 0

Answer: 2 recessive alleles

Explanation:

Trust me G

APEX

olga_2 [115]3 years ago
6 0
Answer;
Two recessive alleles are the number of alleles that a person must have to have albinism.

Explanation;
When a trait is recessive, such as albinism, an individual must have two copies of a recessive allele to express that particular trait. Recessive alleles are denoted by a lowercase letter , such as b versus B. Only individuals with a bb genotye will express a recessive trait, hence, the offspring must receive one recessive trait from each parent to exhibit the recessive trait. 

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Can a person’s genotype be determined by their phenotype? Why or why not?
julsineya [31]

Answer:

No, a person's genotype cannot be determined solely by their phenotype as many genes in our genome do not get expressed.

Explanation:

4 0
3 years ago
PLEASE HELP WILL GET FAILING GRADE IF I CAN'T FINISH THIS ASSIGNMENT!!!
miskamm [114]
1. Depth: The water level in the Great Salt Lake fluctuates from year to year.  Water levels drop and salinity increases when less water flows into the lake than usual. Not only that, but the wetlands dry up and the shoreline recedes. The reason the shoreline shifts so dramatically is because it sits at the bottom of a broad and relatively flat basin. For a visual example, think of pouring water into a plate versus a bowl.  
Salinity: This Great Salt Lake has a high mineral content, as most terminal lakes are, which means that it is quite salty.   Even the fresh water flowing into the lake contains small amounts of dissolved minerals.  As water evaporates from the lake, the minerals stay behind.  As a result, these minerals have accumulated to very high levels because they have been left behind for thousands of years. The Great Salt Lake is between 3.5 and 8 times saltier than the ocean. However, the organisms that survive in such saline conditions have adapted to their surroundings through special features. 
Temperature: The Great Salt Lake has a very shallow depth, with an average of 14 feet deep and a mere maximum of 33 feet. This means that a lot of the surface area is exposed to the air, and is at the mercy of its seasonal temperature fluctuations. In the summer, rise to more than 80 degrees Fahrenheit while falling to below freezing in the winter.  
2. Depth: Salinity drops and lake levels rise during high precipitation years. Wetlands get covered by salt water, and the shoreline expands, sometimes destroying wildlife habitats and killing sensitive vegetation. 
Salinity:  <span>Changes in lake elevation are accompanied by changes in salinity. The salinity in the lake decreases as incoming fresh water dilutes the salt water.  This happens during the wet years.  During dry years, however, salinity increases as continued evaporation removes fresh water.  
</span>Temperature: Because of the lake's salt high content, the water doesn't usually freeze. However, as the temperature drops during the winter, less saline zones freeze solid, and most of the lake turns into a vivid pea-soup green color.  In mid-March, temperatures begin to rise again as brine shrimp begin hatching.  By late April, juvenile, and adult brine shrimp fill the water, serving as food for migrating and breeding birds.
3. Brine shrimp are smaller in highly salty water and larger in less salty water. Also, salinity levels also affect the rate of sexual development. Higher salinities produce adults who reach maturity quicker but are shorter in length. As salinity increases, the abdomen becomes longer relative to body length.  Low salinity may also cause cysts to crack prematurely, as well as allowing other competitors into the ecosystem.  High salinity results in offspring that develop quickly but are smaller and have a relatively longer abdomen.  In short, effects of abiotic conditions on brine shrimp are development rate, the rate of sexual maturity, the overall length of the abdomen, amount/type of food available, cyst density and location.
4. One limiting factor of brine shrimp are predators: corixids that consume brine shrimp, grebes that consume brine shrimp and their cysts, and humans that commercially harvest brine shrimp cysts.  Another limiting factor for brine shrimp is cooler temperatures.  They<span> are much more productive in warmer water and consume more phytoplankton.  However, when the lake water temperature is cold, the shrimp population tends to decline. </span>
4 0
3 years ago
Which of these is an example of chemoprevention?
expeople1 [14]

Answer: A. Research into a phytochemical from a plant which might inhibit cancer development.

Explanation:

The chemoprevention is a process of utilization of chemical formulations such as medication, supplements and vitamins to the stop the growth of cancer cells. This is necessary and important for people which are at high risk of developing cancer.

The research for the phytochemical derived from the plants can be an example of chemoprevention as this will help in inhibiting the cancer development.

3 0
3 years ago
Compound X is used as an energy source in respiration.<br> Suggest the name of compound X.
DedPeter [7]

Answer:

Glucose

Explanation:

After reading the overview of cellular respiration, the primary or initial fuel of respiration should be clear - it's glucose, which is the molecule of sugar that plants create for animals (as well as the plant itself) to utilize as an energy source.

Hope this helps!! Brainliest?? Anyways have a great day!!

5 0
2 years ago
Necesito ayuda Comparaciones del sistema digestivo de los animales: Rana, tiburón, gallina, vaca e iguana
Grace [21]

Answer:

The digestive system of Frog, shark, chicken and cow are the following:

Explanation:

The digestive tract of frog is divided into foregut that consist of esophagus, stomach, duodenum, liver, pancreas, gall bladder and midgut/hindgut where intestine is present. The digestive system of frog comprise of oral cavity, pharynx, esophagus, stomach and intestine. The digestive system of chicken consist of beak, crop, proventricular, ventriculus, small Intestine, large Intestine and Cloaca. The digestive system of cow comprise of mouth, esophagus, rumen, reticulum, omasum, abomasum,  small intestine and large intestine.

5 0
3 years ago
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