BIO101_Lab 9 Worksheets_Mitosis and Meiosis_Spring 2022

A. Interpretation of Graph/Table Use graph key as guide A cell mitosis experiment in which the cells count is determined hourly over a 24 hour period is shown below: Growth curve: What conclusions can you draw about the process of mitosis over a 24-hour period? Lines: Individual Continuous Options Number of Cells.Hour Courtesy: www.inspiration.com 1. What conclusions can you draw about the process of cell mitosis over a 24-hour period;

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BIO 1331: Organismal Biology, Meiosis In-Class Assignment 8. What is the ploidy of this cell, now? Name: Figure 3 9. What happened to the cell between Figure 2 and 3? 10. Do individuals that are homozygous at a given locus have different gamete genotypes? 11. How many different types of gametes can an individual with the genotypes given below produce? (Assume no crossing over). What are those gamete genotypes? a. Aa: Example - this is one gene and the individual is heterozygous, so they will make two types of gametes: "A" and "a" b. AaBb c. AaBbCC d. AaBbCCDd What are the possible offspring from a cross of the following two individual parents: AABbCc x AABbCC; Make a punnett square for each gene individually (A, B & C) "A" "B" "C" 12. List the possible genotypes of the offspring for the three genes (A, B and C) combined: 2

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Attempt all questions. la) with examples, distinguish between. Continuous and discontinuous variation. ii) Dominance and co dominance. iii) Dominant and recessive gene. iv) Chromosome and a gene. i)Centromere and chiasmata. 5 Describe what happens at the following stages of mitosis. Prophase. i) Metaphase. A tall man married á woman and all the off springs were tall. When the off prings were selfed 75%of the outcome were tall. Jsing suitable genetic symbols show; 1)The outcome of'erossing a tall man with a woman. b) The Selfing of the off springs to have 75% of the outcome tall. c) Explain why the offsprings from the marriage of the man and woman were all tall. END HAPPY HOLIDAYS Papont Colapra at conbly f as He'teele oi do tys e Speerh

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1/outline ¥ Question Completion Status: QUESTION 9 During metaphase II of meiosis, O pairs of homologues chromosomes line up in the centre O pair of sister chromatids line up at the centre O Chromosomes are divided into two O Chromosomes thicken QUESTION 10 Which of the following is one of the body's first lines of defense against infection? A) antibodies B) obstacles such as skin and mucous membranes C) increased production of certain hormones D) decreased heart rate O antibodies obstacles such as skin and mucous membranes O increased production of certain hormones O decreased heart rate Save Shmtto sae and submit: Click Save All Answers to save all answers.

A. Directions: Complete the following table by providing five applications of mitosis and meiosis. Mitosis Meiosis 1. 1. 2. 2. 3. 3. 4. 4. 5. 5.

QUESTIONS: ©A cell containing 20 chromosomes (diploid) at the beginning of meiosis would, at its completion, produce cells containing how many chromosomes? ©A cell containing 40 chromatids at the beginning of meiosis would, at its completion, producể cells containing how many chromosomes?

11:51 B +$. ← MitosisAndMeiosis.docx AD B C D E F 2. In what stage were most of the onion root tip cells? Does this make sense? 4. What would happen if mitosis were uncontrolled? 3. As a cell grows, what happens to its surface area-to-volume ratio (hint: think of a balloon being blown up)? How does this ratio change with respect to cell division? 5. How accurate were your time predictions for each stage of the cell cycle? & ON 5G A A C 6. Discuss one observation you found interesting while looking at the onion root tip cells. Cell Cycle Division: Mitosis Beads Dia ר Dronhaco EXPERIMENT 2: FOLLOWING CHROMOSOMAL DNA MOVEMENT THROUGH MITOSIS PAGE 5/... OeScience Labs, 2016

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Biology Unit Test Q3 Home Insert Draw Layout Review View Picture alibri Regular (B 12 B I А. 23. What is the main reason why gamete cells undergo MEIOSIS instead of Mitosis? Explain why. a. 24. What is the main reason why somatic cells undergo MITSOSIS instead of Meiosis? Explain and give an example. a. .

a. Explain how mitosis and meiosis are similar in their processes or mechanism using two examples. b. Explain how mitosis and meiosis are different in their processes or mechanism using two examples. **Please stay away from superficial statements such as both are a type of cell division. We are asking for a more detailed example based on how the cells proceed through the processes which has been highlighted in discussions, videos, and readings.

10:35 bb. ← Which of the following statements describes a process related to reproduction? During asexual reproduction, the offspring are identical copies of the single parent. Nondisjunction is the process of joining of two haploid gametes into a diploid cell. During sexual reproduction, the offspring are identical copies of the two parents. Fertilization is the process of producing diploid gametes from haploid cells through cell division. ◄ Previous Next ▸ Noll 58% Not sa

Instructions: Draw the images asked for. Given a hypothetical cell with ploidy 2n = 6, draw the chromosomes as they move through the different stages of mitosis and meiosis. The colors of the chromosome represent a pair of homologous chromosomes. Please include the colors of the chromosomes in you drawings. Solutions to questions in this portion of the module are found in the university learning management system. In

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• Illustrate the chromosome changes in interphase and mitosis using a diploid cell that is 2n=4 (two large and two small chromosomes). • Label the circles as G1 and G2 stages of interphase and each phase of mitosis (in order). Draw the chromosome in each circle using the following guidelines. 1) For unreplicated chromosome draw a line (/) and for replicated chromosome draw an X. 2) For simplicity, do not indicate that the chromosomes are decondensed chromatin during interphase. ● 3) Skip drawing the nuclear membrane or spindle fibers, since we are focusing on the chromosomes. • Label genes in the resulting daughter cells as A/a and B/b. (These letters represent genes which are at icular places along the DNA molecule. Each chromosomes can have a thousand genes but we are focusing on these two.

week 2 ( 4 - 6 )

Procedure: 1. Draw a Punnett square which shows the inheritance of the sex chromosomes. Represent the female sex chromosomes with XX and the male sex chromosomes with XY. Guide Questions: a. What will be the sex of a child produced when an egg is fertilized by a sperm that has a Y chromosome?. b. What type of sperm must fertilize an egg to result in a female child? c. Based on this Punnett Square, what percent of children would you expect to be male? d. What sex chromosome is present in both male and female? e. Infer which sex chromosomes determines a person's sex. f. What are the other factors that may influence the expression of human sexuality? .

Instructions: Draw the images asked for. Given a hypothetical cell with ploidy 2n = 6, draw the chromosomes as they move through the different stages of mitosis and meiosis. The colors of the chromosome represent a pair of homologous chromosomes. Please include the colors of the chromosomes in you drawings. Solutions to questions in this portion of the module are found in the university learning management system. Interphase

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