- A gene has two alleles. The frequency of the dominant allele is 0.65. What is the frequency of the recessive allele?
- Liver is a brown color found in Dalmatian dogs, producing brown spots on the dog instead of the traditional black. Liver is recessive to black, and the frequency of liver in Dalmatians is 21%. What is the frequency of the recessive liver allele in Dalmatians?
- The ABO blood group is controlled by three alleles, A, B and O. A and B are codominant, such that if a person inherits one of each they are blood type AB. O is recessive to both A and B. A population of people are genotyped and have the following numbers are counted:
Blood Type Number
What are the frequencies of the A, B and O alleles?
- In a large, randomly mating herd of cattle, 16% of the newborn calves have a certain type of dwarfism because of a homozygous recessive allele. What is the frequency of the recessive dwarfism allele?
- What is the frequency of heterozygous carriers in the herd?
- Rhode Island Red chickens lay, on average, 6 eggs per week. You raise Rhode Island Reds and want to increase egg production in your flock. You select the top 25% of your egg layers to breed – these chickens lay, on average, 8.5 eggs per week. After you breed them and the offspring grow to maturity, the offspring lay, on average, 7.1 eggs per week. What is the heritability of egg laying in Rhode Island Red chickens? Genetics
- You are a population geneticist studying a particular disease, which is inherited as an autosomal recessive trait. In the population you are studying, the incidence of the disease is 2%. You need to determine answers to the following questions:
• Calculate the frequency of the normal allele and the disease allele in this population.
• What percentage of your population are carriers for this disease?
• What will be the incidence of this disease in the following generation?
• If this disease is fatal in childhood, what will be the frequency of the normal and disease alleles in the parental generation (breeding adults)?
• If the disease is fatal in childhood, what will be the incidence of the disease in the following generation?
- You are a geneticist studying the frequency of coat color alleles in a local rabbit population. Rabbits that carry two dominant alleles of a particular gene (BB) are brown, while 3.5% of the population are homozygous for the recessive allele (bb) and are white. Heterozygotes (Bb) are mottled, a mixture of brown and white. Assuming this population is in HWE, what percentage of rabbits do you expect to be brown, and what percentage do you expect to be mottled?
As it turns out, this population is not in HWE. You sample 1,000 rabbits and find the following:
752 Brown rabbits
210 Mottled rabbits
38 White rabbits
After observing this population, you find that due to their white coloring, 90% of white rabbits die from predation before they can reproduce. Additionally, 50% of mottled rabbits die from predation before reproducing. Given this information, what do you expect the frequencies of brown, mottled and white rabbits to be in the next generation?
Rome is commonly known as one of the most powerful empires in the ancient world with territory and authority spreading throughout the Mediterranean. Rome falls into a grey area of history. Often it is thought that Rome expanded aggressively, that it was an established goal that Rome set out to conquer Italy and large amounts of surrounding territory. However, this may not be the case as much of the territory acquired was not due to methodically planned Roman expansion, but rather it paints a picture of a civilization attempting to assert their power and protect their own in a particularly violent time in history. Although Rome benefited from expansion through the increase of profitable territory and cultural influence as well as the elimination of enemies who could threaten their security, there were consequences as well. The increase in land and power acted as a catalyst to provoke new enemies and expansion lead to new political and logistical pressures on the Roman government. Through military strength inspired by Roman ideals and virtues, Rome was able to thrive and assert their dominance in the ancient world. This paper will seek to establish that Rome grew from a small civilization into one of the most formidable empires of the ancient world due the required necessities of survival and profited as well as suffered due to its expansion. Rome began as a small settlement on the Tiber River it was not the empire that comes to mind when one thinks of Rome. As it began to grow much of the territory they acquired was as a result of conflicts with neighboring groups. Livy writes about this period but often romanticizes the “glory days” of the Roman republic, and this lens must be taken into account. Livy describes the period of monarchical rule as having been under the rule of seven kings; several are noted as having reignited wars and expanding territory including Tullus Hostilius and Ancus Martius. Not much is said about these kings besides how they conquered peoples in the surrounding area of Rome, this indicates that depending on who was in control in times of absolute rule indicated whether Rome was expanding aggressively or not. This writing also shows that there was significant expansion occurring at this time. (Livy 161) Beyond this period into the Republic it appears to be much of the same trend, conflict that leads to expansion although the Republic’s intentions were more complicated as power was not concentrated to one man. The Punic Wars were a costly example of how Roman expansion served as a catalyst for further conflicts with other large powers in Europe and North Africa. The Punic Wars showed how war could result in the expansion of territory but at a steep cost in time, money, and life; as a result Rome acqui>GET ANSWER