3. The relationship between a giraffe's neck length and its fitness would be better described by a linear equation (y = ax + b) than a quadratic equation (y = ax² + bx + c). True False
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- 10) The following figure describes results from an experiment in which brood size in breeding European kestrels was manipulated. Which of the following statements are supported by these results? Flight (hours/day) Adult survival rate (%) 007 CO 10 3 cu 1 0 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 T 1 Female Question 10 options: • Male 2 3 4 5 6 Brood size (number of chicks) 1 7 Survival of adult males decreased with increasing brood size. Females spent more time foraging (measured as hours spent daily in flight) than did males. Brood size decreased with date (i.e., late season broods were smaller than early season broods).12. The fitness for a particular species of bats is determined by a single gene locus with two segregating alleles, (E) and (e), that determines echo-location ability. The dominant allele E causes normal echo-location, whereas the recessive allele e impairs echo-location ability. You are studying a large population and determine initial frequencies of the E and e alleles to be 0.7 (p) and 0.3 (q), respectively. Assume genotypes are in Hardy-Weinberg equilibrium. Given the following average offspring numbers, determine the effects of natural selection on the allele frequencies after one generation (what are the new frequencies of p and q?). Genotype Average # Offspring EE 10 Ee 10 ee 6. 5. Genes A B an hiognthotic nathwaye!24. In a toad population, green toads produce 4 offspring over their lifetime, brown toads produce 2.5 offspring, and gray toads produce 6 offspring. What are the relative fitnesses of these phenotypes (in the order green, brown, gray)? Group of answer choices 1, 0.42, 0.67 0.33, 1, 0.67 0.67, 0.42, 1 0.67, 0.33, 1 1, 0.33, 0.67
- 3. A population of sheep is in Hardy-We inberg equilib riu m. The alle le for white wool (W ) has an alle le fre quency of 0.1 9, and the alle le for black wool (w)has an alle le fre quency of 0.81 . Whatis the percentage of heterozygous in dividuals in the population?Max Weight vs. Max Lifespan of Dog Breeds 20 Max Life Span 10 50 100 150 200 Max Weight Which of the following conclusions is BEST supported by the scatter plot? A Dog breeds with a higher maximum weight tend to have longer maximum lifespans B Dog breeds with a higher maximum weight tend to have shorter maximum lifespans (c) All dog breeds tend to have the same average lifespan D Older dogs weigh more than younger dogs (b) This question refers to the chart from the previous question. Which of the following conclusions is BEST supported by the scatter plot? A No dog breeds that weigh more than 150 pounds are expected to live more than 10 years. B All dog breeds that weigh less than 50 pounds have a maximum lifespan of more than 10 years c) Most dog breeds have a maximum life span of 10 or fewer years D) Most dogs breeds have a maximum weight of 100 Ibs or more9. 8. The two histograms represent the frequency distribution for the two different types of variation. Q R 10. A B Which of the statements, A to D, about characteristic Q is correct? с D controlled by many genes and unaffected by the environment number of organisms controlled by one or two genes and unaffected by the environment controlled by many genes and influenced by the environment Your answer controlled by one or two genes and influenced by the environment A. B. W characteristic C. What evidence is given in the pedigree chart below to establish that the condition is caused by a dominant allele? D. number of organisms Two unaffected parents have unaffected children. Two affected parents have affected children. An affected parent and an unaffected parent have affected children. Two affected parents have an unaffected child. A. 0% B. 25% C. 50% characteristic In fruit flies (Drosophila melanogaster) grey body is dominant to black body and normal wings are dominant to vestigial…
- 75. Under the conditions of the Hardy-Weinberg equilibrium, what term in the equilibrium equation represents the expected genotype frequency for homozygous recessive individuals? p2 2pq 2p+q p2+2pq+q2 q2I expect for genetically identical animals that have been reared in similar conditions to have a smaller SD for any parameter that I decide to measure compared to genetically diverse animals that have been grown in a variety of natural environments. A-TrueB-FalseI expect for genetically identical animals that have been reared in similar conditions to have a smaller SD for any parameter that I decide to measure compared to genetically diverse animals that have been grown in a variety of natural environments.
- 1. Calculate the genotype frequencies of a population of flowers where the frequency of the CR allele is 0.8 and the CW is 0.2. There is incomplete dominance, and the population is in equilibrium. Do you understand how to calculate the following answers? CRCR 0.64 CRCW = 0.32 CWCW=0.04 total = 1.00 = ninige bas amm di mislqx1. You measure the effects of a single allele (A2) on fitness in two populations of the same plant species, Population X and Population Y. Population X lives at higher altitudes. The average excess of fitness of the A2 allele (aA2) in Population X is 1.21, and the average fitness of the population (w) is 1.0. Population Y lives at a lower altitude. The average excess of fitness of the A2 allele (aA2) in Population Y is -1.68 and the average fitness of the population (w) is 1.0 a) Which population is likely to experience faster evolution? Why? b) What do you predict will happen to the frequency of the A2 allele (pA2) in population X? c) What do you predict will happen to the frequency of the A2 allele (pA2) in population Y? d) Why do you think the average excess of fitness of the A2 allele is different in these two populations?Behavioral resistance is a characteristic that increases the fitness of an individual compared to individuals without the trait. O True O False here to search 6. G B M |立