bb x bb e. BB x bb 29. To determine whether an unknown black guinea pig is pure or hybrid black, it should be crossed with a. a white b. a hybrid black c. a hybrid white d. a pure black e. another unknown 30. Organisms that have two identical alleles for a particular trait are said to be a. hybrid b. homozygous c. heterozygous d. dominant 31. A pea plant heterozygous for height and seed color (TtYy) is crossed with a pea plant heterozygous for height but homozygous recessive for seed color (Ttyy). If 80 offspring are produced, how many are expected to be tall and have yellow seeds?
Take a few minutes to familiarize yourself with how the simulation software works. Be sure to notice the following: The population graph under the environment. This is where you will get the number of each type of rabbit. You can zoom in or out to get a more accurate reading of population size. The generation bar, play, and pause buttons.
To determine if hyphae grow at the same rate, graph the results of table 2 and compare the slopes of the 3 hyphae from the slide preparations. 11. To determine if mycalolide B affects fungal tip growth and nuclear position repeat all the steps except in step 2 need to add mycalolide B and let it incubate for 10 minutes. Make sure to label the slides with the
To manipulate the flies, they are anesthetized using CO2 that is administered through the FlowBuddyTM device with a 5 L/min flow rate. Once immobile, the flies are examined and scored under a 10.5-45X magnification stereomicroscope. The flies are returned to the incubation chamber set at 25ºC to facilitate optimal growth conditions. The first discriminant cross, DC1, is made by crossing mutant virgin females with Curly/Plum; Dichaete/Stubble marker males. Depending on the genetic outcome of DC1, the second discriminant cross, DC2, is made by crossing female wild-type virgins with F1 males if the unknown mutation is dominant, or by crossing F1 males with mutant females if the unknown mutation is recessive.
(1996). Correlative memory deficits, Abeta elevation, and amyloid plaques in transgenic mice. Science 274 (5284), pp. 99–102. Lalonde R, Dumont M, Staufenbiel M, Sturchler-Pierrat C, Strazielle C. (2002).
Michael Canfield 10/15/09 APES Owl Pellets-A Study of Food Webs The objective of this lab is to observe the type of species found in an owl pellet and how many of that particular species is present. It is also to observe the food web of an owl by examining its pellets. Once we found out information about our specimen, we compared it to the data our whole class obtained. In total, the class examined 25 different pellets, and found 55 animals within the pellets. This means that there were 2.2 animals per pellet.
Call these two styles “Active” and “Passive.” Children were assigned at random to Active and Passive groups. After the lesson, the computer presented a quiz that asked the children to identify 56 Blissymbols. Here are the numbers of correct identifications by the 24 children in the Active group and the 24 children in the Passive
aa What is the genotype of person I3? Aa Test Cross Describe the test cross that a farmer would use to determine the genotype of an animal that shows a dominant trait. Use the following Punnett squares and the letters A and a to explain your answer. cross the animal with a recessive; if the animal is Aa crossed with aa – then ½ of the offspring will be recessive; if the animal is AA crossed with aa – all offspring will show the dominant trait. Mendel’s Laws Explain each of Mendel’s Laws and explain the experiments he used to determine these laws.
a. What are the parental genotypes? b. What F1 phenotypic and genotypic ratios are produced from this cross? (Show your Punnett Square) c. Diagram the F2 results.
Lab Report #12 Making a Genetically Modified Cell Answer the following questions about the results of the virtual lab activity. Record your answers in the boxes. Reference Use the following illustrations to help you identify the cell types from your lab. [pic] Activity 1 – Cell Maintenance Experiment 1 Record your results from Experiment 1 in the boxes below. Enter the information on the growth conditions, cell types, and cell density in the corresponding columns.