Write a model describing a situation analogous to that of the LPA model (with cannibal- ism), but such that the time for a pupa to become an adult is twice as long as the time it takes for a larva to pupate.
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- Recyc FOR 7 Forg Emp Micro Ed ← C Mc Graw Hill 60°F Clear Piedmont Technical College Multiple Choice Question https://learning.mheducation.com/static/awd/index.html?_t=1680067 0000000000000000000000000000 0000000000000 of 41 Concepts completed X The nervous system directly controls O blood cells and hair growth O bone growth O muscles and glands M Question Mode: Multiple Choice X EE Read About the Concent Need help? Review these concept resources. Rate your confidence to submit your answer. High i Medium + O Search 2023 McGraw Hill All Dighte Doceniod LCNeed help with question 1 nad 2 1.) As young roosters mature, they develop secondary sex characteristics such as crowing, fighting with other males and trying to mate. If the testes are removed at an early age, the roosters do not develop these characteristics. These castrated roosters are called capons. This experiment demonstrates that the testes stimulate the development of sexual behavior in some way. The most convincing evidence that the testes stimulate sexual behaviors by releasing hormones into the blood is that A.) removal of the testes from young roosters prevents them from developing sexual behavior B.) removal of the testes does not effect normal growth and the development of typical male plumage C.) replacing the testes anywhere in the bodies of capons stimulates their sexual behavior D.) replacing the testes only stimulates sexual behaviors if they are reconnected to the nervous system 2.) After several hours of fasting, blood glucose levels tend to decrease…Problem 3. If 9% of an African population is born with a severe form of sickle-cell anemia (ss), what percentage of the population will be more resistant to malaria because they are heterozygous(Ss) for the sickle-cell gene? (f)S p= (f)s q=_ (f)SS p²= (f)Ss 2pq = (f)ss q'= %3D Problem 4: Within a population, 125 out of 2,000 plants have white flowers. F=purple f=white (f)F p= (f)f q=- (f)FF p²= ()Ff 2pq = (f)ff q²= %3D How many of the 2,000 plants are homozygous dominant? How many are heterozygous? Problem 5: You and 19 healthy friends build a raft, sail to a deserted island, and start a new population, totally isolated from the world. Two of your friends carry (that is, are heterozygous for) the recessive cystic fibrosis allele, which in homozygous recessive genotype causes cystic fibrosis. Assuming that the frequency of this allele does not change as the population grows, what will be the instance of cystic fibrosis on your island? (f)S p= (f)s q= ()SS p² = (f)Ss 2pq = (f)ss q²= %3D
- QUESTION 7 Which of the following are not characteristically controlled by hormones during vertebrate reproduction? • The levels of muscle cell metabolic activity. • Encapsulation of gametes by fluid or physical barriers • Sex behavior • Meiosis of stem cells into eggs or sperm • Production of vitellogeninProblem: What is the primary cause of the endangerment of Varanus mabitang (Panay Monitor Lizard)? Hypothesis: habitat loss due to deforestation causes more endangerment of Varanus mabitang. As humans cut down the forests, These lizards lose habitat and prey that they need to survive. Question: How would you test your hypothesis? State the methods you think are appropriate to test your hypothesis.QUESTION 9 What is the physiological role of a gonadotropic hormone in vertebrates and invertebrates? • To drive the growth of gonads and their ability to produce gametes. • To inhibit parental provisioning. • To inhibit steroid-mediated inhibition of GRH release. • To shift energy from the female toward reproductive activities.
- Q4.20. Mayflies are semelparous species, reproducing only once in their lives. Nymphs feed and grow in streams. Once they metamorphose into adults, they emerge from the stream, reproduce, and then die. Females produce hundreds to thousands of eggs, and the adult phase is so short that adults lack mouth parts and cannot feed. What is the life history trade-off mayflies make by adopting this strategy? A) They trade away future reproduction for higher fecundity. B) They trade away growing larger for higher fecundity. C) They trade away adult survivorship for earlier reproduction. D) They trade away higher fecundity for future reproduction...Apply Evolutionary Thinking When a biologist first tested a new pesticide on a population of insects, she found that only 1% of the insects survived their exposure to the poison. She allowed the survivors to reproduce and discovered that 10% of the offspring survived exposure to the same concentration of pesticide. One generation later, 50% of the insects survived this experimental treatment. What is a likely explanation for the increasing survival rate of these insects over time?No Service x 12:43 AM ✓ @ 53% In a species of fish, two neighboring populations occupy slightly different habitats; the first mainly lives in shallow waters with low predation, the second lives in deeper waters with increased predation. Males in the first population develop a long anal fin as secondary sexual trait in population, but males in the second population do not have long fins. When researchers artificially attached long anal fins to males from the second population, they found that female fish much preferred males with the longer fins. They also found that gene flow between these populations exist, and that long anal fins make it harder to swim fast. Why aren't long fins more frequent in this population? O Natural selection is counteracting sexual selection O There isn't enough genetic variation for long tails to develop O These populations are in the process of speciating, and eventually females will develop a preference for short tails. O Drift is causing long tails to…
- Problem Statement: 1-What is the effect of global warming on the Coral Reef populations? 2- What is the effect of agriculture on the Coral Reef population? 3- What is the effect of logging on the Coral Reef population? 4- What is the effect sewage on the coral reef population? Hypothesis:Question:- Briefly describe some of the promising avenues to increase the human lifespan.Discuss Concepts In integrated pest management, a farmer uses a variety of tools to combat unwanted insects. These include applications of either hormones or hormone-inhibiting compounds to prevent insects from reproducing successfully. How might each of these hormone-based approaches disrupt reproduction?