The gene d controls wing shape in flies and has two alleles: d is wild-type and dominant, and d is recessive and causes flies to have downward pointed wings. the gene e controls eye development and also has two alleles: e is wild-type and dominant, and e is recessive and causes the flies to have small eyes. the two genes are located on the same chromosome. a pure-breeding fly with normal wings and small eyes was crossed with a pure-breeding fly with downward wings and normal eyes. all of the f1 progeny had a wild-type phenotype. the recombination frequency between the two genes is 14%. if an f1 individual was test crossed, what percentage of the progeny would you expect to have the wt phenotype? 43%7%28%14%86%

Will mark brainliest i only need the ! 1.use ten beads and a centromere of one color to construct the long chromosome. use ten beads and a centromere of a second color to construct the second chromosome in the long pair. make a drawing of the chromosomes in the space below. 2. for the second pair of chromosomes, use only five beads. 3. now model the replication of the chromosomes. make a drawing of your model in the space below. part b: meiosis i during meiosis i, the cell divides into two diploid daughter cells. 4. pair up the chromosomes to form tetrads. use the longer tetrad to model crossing-over. make a drawing of the tetrads in the space below. 5. line up the tetrads across the center of your “cell.” then model what happens to the chromosomes during anaphase i. 6. divide the cell into two daughter cells. use the space below to make a drawing of the result. part c: meiosis ii during meiosis ii, the daughter cells divide again. 7. line up the chromosomes at the center of the first cell, one above the other. separate the chromatids in each chromosome and move them to opposite sides of the cell. 8. repeat step 7 for the second cell. 9. divide each cell into two daughter cells. use the space below to make a drawing of the four haploid cells

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis