Suppose you studied a population of blue-eyed grass, and found that there are 9025 blue-flowered plants out of a total population of 10,000. Assuming Hardy-Weinberg equilibrium, what is the frequency of the white allele (W) in the population?
= 0.05
Suppose you went back to this population after one year, and found that the frequency of the blue-allele was at 0.88. Assuming Hardy-Weinberg equilibrium, how many white flowered plants are there if there are 10000 in total?
= 2256
Based on this result, what should you conclude from this result? -None of these answers are correct Research has shown that the white-flowered allele (W) oscillates in frequency, because pollinators tend to prefer it when it is rare, causing it to increase in frequency. When white flowered plants are common, pollinators prefer the blue plant, causing it to decrease in frequency. As such, which of the following type of selection does this describe?
Balencing selection
Disruptive selection
None of these answers are correct
Directional selection
Stablizing selection
Suppose you studied a population of blue-eyed grass, and found that there are 9025 blue-flowered plants...
A plant called blue-eyed grass normally produces blue flowers. However, plants producing white flowers also occur, because an allele for the gene coding for the protein that produces the blue pigment is non-functional. This white-flowered allele (W) is dominant to the blue-flowered allele (w), but generally occurs at very low frequency in populations. Suppose you crossed a homozygous dominant plant with a homozygous recessive plant, and the result is 16 seeds. If you plant these, assuming simple Mendelian genetics, how...
A plant called blue-eyed grass normally produces blue flowers. However, plants producing white flowers also occur, because an allele for the gene coding for the protein that produces the blue pigment is non-functional. This white-flowered allele (W) is dominant to the blue-flowered allele (w), but generally occurs at very low frequency in populations. Suppose you crossed a homozygous dominant plant with a homozygous recessive plant, and the result is 16 seeds. If you plant these, assuming simple Mendelian genetics, how...
4. In a given population, 16% of the population has blue eyes and 84% has brown eyes. Although eye color is a polygenic trait, let us assume for this problem that the brown-eyed allele is dominant to the blue-eyed allele and that the population is in Hardy-Weinberg equilibrium. What are the gene frequencies for brown eyed and blue-eyed alleles? = '16 Pa Brown-eyed allele frequency: _ qe 0.4 Pa 0.4 Blue-eyed allele frequency: - In this same population, there are...
1. You are studying a population of sandblossoms (Linanthus parryae) that has individuals with blue and white flowers. The allele for white flowers (A) is dominant to the allele for blue flowers (a). In the population you survey, 91 out of 100 individuals have white flowers. Based on this information: a. Calculate the frequency of the A and a alleles. b. Calculate the numbers of each genotype. 2. A population of snapdragons (Antirrhinum hispanicum) has two additive alleles for flower...
A wildflower native to California, the dwarf lupin (Lupinus nanus) normally bears blue flowers but occasionally bears pink flowers. Flower color is controlled by a single diploid locus, with the blue allele (B) completely dominant over the pink allele (b). In a wild population of lupins, there are 100 pink lupins and 2291 blue lupins, for a total of 2391. 1) Calculate the genotype and allele frequencies of this population, assuming that the population is in Hardy-Weinberg equilibrium. Show the...
In a population of wild sweet pea plants that you assume are in Hardy-Weinberg equilibrium, 1% of plants express a recessive white flower color. A) What is the expected frequency of heterozygotes in the population? Number You have noticed a shift in pollinator frequency and you want to test whether this has resulted in selection on flower color. You sample 1000 plants and genotype them at this locus. B) How many of each genotype do you expect based on the...
A wildflower native to California, the dwarf lupin (Lupinus nanus) normally bears blue flowers but occasionally bears pink flowers. Flower color is controlled by a single diploid locus, with the blue allele (B) completely dominant over the pink allele (b). In a wild population of lupins, there are 43 pink lupins and 3398 blue lupins, for a total of 3341. Calculate the genotype and allele frequencies of this population, assuming that the population is in Hardy-Weinberg equilibrium: Genotype frequency of...
In a population of Mendel's garden peas, the frequency of the dominant A (purple flower) allele is 80%. Letp represent the frequency of the A allele and q represent the frequency of the a allele. Assuming that the population is in Hardy-Weinberg equilibrium, what are the genotype frequencies? A. 16% AA, 40 % Aa, 44 % aa B. 80% AA, 10 % Aa, 10 % aa C. 50 % AA , 25 % As , 25 % aa * E....
4. A population has two alleles at the height locus. The Tallele is form the tail ons short trait. T is dominant to t. The frequency of the tall phenotype is found to frequency of the short phenotype is found to be 0.64 (64%). Assuming the pop Weinberg Equilibrium, what are the values for p (frequency of the T alle t allele)? Give an actual number. Space for calculations ne i allele is form the tall trait, and the t...
QUESTION 2 Climate change is a threat to the existence of many species. Which of the following limits to natural selection hinders the adaptation of species to the new climate conditions? The developmental plans of plants and animals are too complex. They cannot cope with the warmer temperatures. Mutations happen so frequently that beneficial alleles change before natural selection can substantially increase their frequency Many species not have gene variants in their gene pool that are beneficial in higher temperatures. Climate change happens so...