BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 28, Problem 2IQ
Summary Introduction
To determine: Whether the Ulva gametes are formed by meiosis.
Introduction: Mitosis results in the doubling of the haploid genetic content in the cell causing the production of a diploid zygote. The process of meiosis results in no change in the haploid content as the process produces gametes that consist of only one set of chromosomes in the cell. The mitosis takes place in somatic cells and meiosis in gametic cells.
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Need help with question:
- if a nucleus has 12 chromosomes when it begins meiosis, how may chromosomes dose it have after telophase I ? How many are there after telophase II?
- which meiotic phases underlie variation?
- why is it advantageous for a species to have variation with in genetic material? When is it a disadvantage?
Need help with three question. Multiple choise.
1.) How is the outcome of meiosis different from the outcome of mitosis?
a.) The daughter cells produced in mitosis are genetically different from the parent cells, but have the same number of chromosomes, while these are genetically similar in case of meiosis and have fewer chromosomes.
b.) The daughter cells produced in mitosis are genetically similar to the parent cells and have the same number of chromosomes, while these are genetically different in meiosis and have half the number of chromosomes.
c.) The daughter cells produced in both cases are genetically similar to the parent cells, but in meiosis, there are fewer chromosomes.
d.) The daughter cells produced in both cases are genetically different, but in mitosis, there are fewwer chromosomes in daughter cells.
2.)
What would be the effect on the number of chromosomes in gametes due to non-disjunction?
a.) The chromosome number of the gametes remains the same as the parent…
Question:-
explain the oogenesis of the PIG (FEMALE) specifically in the origin of gametes
Chapter 28 Solutions
BIOLOGY
Ch. 28.1 - Prob. 1LOCh. 28.1 - Define endosymbiosis and explain how it relates to...Ch. 28.1 - Describe how mitosis in fungi and some protists...Ch. 28.2 - Describe how an organism would be classified as a...Ch. 28.2 - Prob. 2LOCh. 28.2 - Prob. 3LOCh. 28.3 - List the main features of diplomonads and...Ch. 28.3 - Prob. 2LOCh. 28.3 - Prob. 3LOCh. 28.3 - Prob. 4LO
Ch. 28.4 - Identify the distinguishing feature of the members...Ch. 28.4 - Prob. 2LOCh. 28.4 - Prob. 3LOCh. 28.4 - Prob. 4LOCh. 28.5 - Prob. 1LOCh. 28.5 - Distinguish between cellular and plasmodial slime...Ch. 28.6 - Prob. 1LOCh. 28.6 - Describe how humans use red algae.Ch. 28.6 - Explain why charophytes are considered the closest...Ch. 28.7 - Prob. 1LOCh. 28.7 - Prob. 2LOCh. 28.8 - Prob. 1LOCh. 28 - Prob. 1DACh. 28 - Prob. 1IQCh. 28 - Prob. 2IQCh. 28 - Fossil evidence of eukaryotes dates back to a. 2.5...Ch. 28 - DNA is not found in this organelle. a. Endoplasmic...Ch. 28 - Prob. 3UCh. 28 - Both diplomonads and parabasalids a. contain...Ch. 28 - Trypanosomes are examples of a. euglenoids. b....Ch. 28 - Prob. 6UCh. 28 - If a cell contains a pellicle, it a. can change...Ch. 28 - Strainenopila are a. tiny flagella. b. large...Ch. 28 - Choose all of the following that exlubit an...Ch. 28 - Choose all of the following that are...Ch. 28 - Prob. 11UCh. 28 - When food is scarce, cells of this organism...Ch. 28 - Analyze the following statement; and chose the one...Ch. 28 - Determine which feature of the choanoflagellates...Ch. 28 - Examine the life cycle of cellular slime molds,...Ch. 28 - Modem taxooomic treatments rely heavily on...Ch. 28 - Prob. 2SCh. 28 - Design an experiment to demonstrate that cells of...
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- Need help with question: -If a nucleus has 12 chromosomes during interphase,how many chromosomes does it have during metaphase? How many are there after mitosis has finished? - the contrast of the cleavage furrow with the cell plate. Offer details at the cellular level.arrow_forwardtopic: elodea 2. what do you think the purpose of cyclosis is?arrow_forwardNeed urgent help with this question. Why do siblings, who share the same parents, look similar but not identical. Refer to the opportunities for genetic variability in meiosis in the explanation. (Grade 11 Bio)arrow_forward
- Subject [Developmental Biology] Question; In an OUTLINE FORM, describe briefly the phases of neurulation. Mention some signaling molecules, genes, morphogenetic factors, and other factors, intrinsic/extrinsic factors responsible for each phase. NOTE [Follow the instruction]arrow_forwardPLEASE ASAP I WILL RATE "Polyploidy is the chromosome increases in the form of multiples of the haploid number.” TRUE OR FALSEarrow_forwardGive typing answer with explanation and conclusion 1.The process of meiosis for female gametes is called tetralogy oogonadosis oocyte oogenesisarrow_forward
- Picture name - Tradescantia spathacea meiotic cell. HPO (400x)Shown below are photomicrographs of Rhoeo tradescantia cells undergoing meiosis. Answer the following question for each of the photomicrographs: Identify the cytogenetic abnormality observed (ex. ring, chain, laggard, bridge). Identify the meiotic stage in which these aberrations are observed (as shown in the photomicrograph). Explain how these aberrations are formed and relate to the possible causal mutation(s). Will this result to sterile and/or fertile gametes? Explain.arrow_forwardMatch the phases of meiosis with their descriptions. Question 6 options: chromatids of chromosomes are pulled apart and move toward the cell sides nuclear membrane disappears and tetrads form chromosomes align along the middle of the cell tetrads align along the middle of the cell chromosomes from tetrads reach the sides of the cells and the nulcear membrane reforms chromatids of chromosomes reach the cell sides and the nuclear membrane reforms; cytokinesis occurs near the end chromosomes reside in the cell's center and the nuclear membrane disappears chromosomes of tetrads separate and move toward the cell sides 1. prophase 1 2. metaphase 1 3. anaphase 1 4. telophase 1 5. prophase 2 6. metaphase 2 7. anaphase 2 8. telophase 2arrow_forwardQ1- Why does mitosis and binary fission not always lead to exact copies the parent?arrow_forward
- Need urgent help with this homework question. Why do siblings, who share the same parents, look similar but not identical. Refer to the opportunities for genetic variability in meiosis in the explanation. (Grade 11 Bio)arrow_forwardIDENTIFICATION (Subject - Developmental Biology) 1. Process when one embryonic region interacts with the second and affecfs the second regions differentiation or behaviour. 2. Visible rings produced from repeated DNA replication without separation of the newly formed stands. 3. Stage when cells cannot retain themselves and unable to maks protiens.arrow_forwardRhoeo tradescantia meiotic cells 1. What is the type of chromosomal aberration for each photo and what is the meiotic stage that it is at? 2. How did that type of mutation formed?arrow_forward
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cell division of meiosis and mitosis; Author: Stated Clearly;https://www.youtube.com/watch?v=A-mFPZLLbHI;License: Standard youtube license