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| True | |
| False |
| True | |
| False |
In recent years, modern breeding methods in swine production have resulted in fewer breeds and a narrowing of the genetic base.
| True | |
| False |
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- What is often true of a population of organisms with a type Il suvivorship curve? they produce few offspirng and invest more energy in each offspring they produce more offspring and invest little energy in each they have low death rates during early life stages they are equally likely to die at any ageWhile you are roller-blading around Lake Artemesia in Greenbelt, you notice a fascinating bark beetle on the trees. Glad for an excuse to catch your breath, you stop and observe that there are three different feeding behaviors in these beetles and you record the ratios of beetles with each of these behaviors. Being the biologist that you are, when you get home you dive into the literature and find the following genotypes are in the beetle population. BB (feeds under bark) 0.7 Bb (feeds on top of bark) 0.2 bb (feeds on leaves) 0.1 What are the allele frequencies and expected genotypic frequencies? Explain.The primary purpose of the poultry industry in the United States is to produce inexpensive sources of protein for human consumption. True False Which poultry mating system produces the maximum number of hatching eggs. artificial insemination pen mating stud mating mass mating none of the above
- Litter size, and calving interval can be measure in chicken. True or FalseIn a tilapia hatchery, a certain population of Nile tilapia broodstock (GA) appears to have low egg production performance. Another group (GB) was found to have a higher than normal egg production performance. When the two populations are mated (GAxGB) and compared to the pure breed (i.e. GAxGA and GBxGB), the following production performance is achieved: GA x GB 90% of offspring has 700 eggs produced per fish 10% of offspring has 300 eggs produced per fish GA x GA Average offspring egg production is 250 eggs per fish GB x GB Average offspring egg production is 1000 eggs per fish Is this egg production performance genetic in nature? Provide a logical explanation for your analysisThe health profiles of preagricultural humans were likely worse than those of many modern humans. True False
- This graph shows the Total fertility rate vs. years of schooling for countries around the world. Country labels are above and to the right of their points. Niger Mali Democratic Republic of Congo 6 Mozambique Afghanistan Cote d'Ivoire Cameroon" Sudan Iraq Kenya Pakistan Zimbabwe Jordan Guatemala Egypt Philippines 3 Indiâ Nepal Myanmar Bangladesh Fiji Indonesia, Mexico Malaysia United States Russia • South Korea China Irần Portugal Italy. 1 4 6 8 10 12 Mean years of schooling Which countries are expected to have decreasing populations? O Egypt, Indonesia and Bangladesh Portugal, Iran and China Malaysia, Fiji and Mexico O Afghanistan, Sudan and Cote d'Ivoire Total fertility rate 4.What is often true of a population of organisms with a type Ill suvivorship curve? they produce few offspirng and invest more energy in each offspring they produce more offspring and invest little energy in each they have low death rates during early life stages they are equally likely to die at any ageConservation biologists working with the Florida panther have set out camera traps to estimate the overall population. Through a combination of live trapping and hair snares, the biologists have worked out the exact genetics for two alleles in all remaining individuals. The homozygous recessive state causes a debilitating disease and the panthers die before reproducing. Biologists have found a high incidence of heterozygous individuals. Help the biologists determine the best conservation action in order to protect and boost the genetic health of the remaining population. The current population of Florida panthers in this example is twenty which is based upon available habitat. Eighteen of the panthers are heterozygous [Aa]. Scientists have determined that eighteen is the minimum viable population for the Florida panthers. If eighteen of the panthers are heterozygous and if homozygous recessive individuals die before reproducing, what is the genotype for the remaining two…
- Conservation biologists working with the Florida panther have set out camera traps to estimate the overall population. Through a combination of live trapping and hair snares, the biologists have worked out the exact genetics for two alleles in all remaining individuals. The homozygous recessive state causes a debilitating disease and the panthers die before reproducing. Biologists have found a high incidence of heterozygous individuals. Help the biologists determine the best conservation action in order to protect and boost the genetic health of the remaining population. The current population of Florida panthers in this example is twenty which is based upon available habitat. Eighteen of the panthers are heterozygous [Aa]. Scientists have determined that eighteen is the minimum viable population for the Florida panthers. How many of the twenty panthers in this generation will suffer from the disease and die? What is the number of survivable Florida panthers?In Kenya, the Sheldrick Elephant orphanage takes care of elephants that have lost their herd as a result of poaching. In 2012, the orphanage had a population size of 387 elephants. Over the next two years, they had 18 pregnant cows birth successfully. Three cows were lost due to complications with their pregancies. They lost 14 more from sickness. They found 57 elephants that required care and were able to release 12 into the wild. All of the elephants are kept in a 225 m 175 m rectangular park. Calculate the population growth, growth rate, per capita growth rate and population density at beginning of the year and end of the year. Express your answers using two significant digits.In 1956, two Corsican mouflon sheep were introduced to Haute Island, which has an area of 7.00 km^2. In 1957, the pair were able to reproduce for the first time. By 1977, the population had grown to 600 sheep due to abundant food sources and the lack of natural predators in the area. Since then, the Haute Island sheep population has fluctuated between 200 sheep and 600 sheep. In 1990, 250 mouflon sheep were relocated from Haute Island to a neighbouring island with similar terrain, soil, vegetation and weather patterns. The neighbouring island has an area of 10.0 km^2. 1. Compare the density of the Corsican mouflon sheep population on Haute Island in 1977 with the neighboring island in 1990. (three sig digits) 2. Explain how the growth of the Corsican mouflon sheep population on Haute Island caused interspecific competition ? 3. What prevented the Haute Island sheep population from increasing beyond 600 sheep? 4. What was the growth rate of the Corsican mouflon sheep population on…