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correcting for all those trapped( Biology PAPER ONLINE) ANSWERS FOR THOSE FOOLS AS ME when I trusted their answers and this is my real revenge : here are the correct answers trust me these are the correction and you can double check your text book:
Exam 4 biology (take home exam answers corrections):::::
__A___1. Eukaryotic cells spend most of their cell cycle in which phase?
A.interphase B.prophase C.metaphase D.anaphase E.telophase
2-3.If this sequence represents the phases or stages of mitosis beginning with I as the cell in interphase, consider the sequence and answer the questions relating to the sequence.
I --> II -> III -> IV -> V --à VI and VI
__A___2. The DNA (nucleic acid) replicates during phase or stage:
A.I B. II C. III D. IV
__A___3. The number of chromosomes in each cell in stage VI is
A. the same as the cell at the beginning of stage I
B. double that number
C. one-half that number
D. none of the above
__B___4. The pattern of mitosis is necessary to
A. keep genetic continuity B. introduce variety
C. cause cancer D. none of the above
___B__5. The segregation of paired hereditary factors (genes) that Mendel postulated occurs:
A. during mitosis B. during meiosis C. at fertilization D. only in sex linkage
_A____6. Which of the following processes occur(s) during interphase?
A. duplication of the chromosomes
B. chromosome migration to the center of the cell
C. the splitting of the centromeres
D. pairing of duplicated homologous chromosomes
__D___7. Which of the following processes occur(s) during mitotic anaphase?
A. the centromeres of each chromosome divide
B. sister chromatids separate
C. the chromatid DNA replicates
D. daughter chromosomes begin to move toward opposite poles of the cell
E. A, B, and D are all true
___A__8. In an animal in which the diploid number is 28, the chromosome number of each gamete will be
A. 14 B. 28 C. 42 D. 56
___D___9. Which of the following is true of meiosis?
A. The chromosomes synapse during metaphase.
B. Crossing over reduces variation in a population.
C. The end product is 4 diploid gametes.
D. No chromosome replication occurs between meiosis I and II.
__E___10. Synapsis occurs during:
A. metaphase I B. prophase II C. metaphase II
D. anaphase I E. prophase I
__D___11. Which of the following reproduction processes results in offspring genetically identical to their parents?
A. budding B. binary fission C. sexual reproduction D. both A and B
___D_12. Which of the following increases genetic diversity?
sexual reproduction
B. crossing over
independent assortment of chromosomes to daughter cells in meiosis
D. all of the above
__B__13. Most prokaryotic organisms reproduce by which of the following processes?
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A. regeneration B. binary fission C. budding D. zygote formation
_B__14. Humans have 46 chromosomes in their somatic (body) cells. The chromosome number in an egg cell is:
A. 46 B. 23 C. 92 D. 44
___D_15. A primary oocyte gives rise to:
A. four diploid egg cells
B. one diploid egg cells and three polar bodies
C. four haploid egg cells
D. one haploid egg cell and three polar bodies
__all of the above__16. Homologous chromosomes:
pair during synapsis
contain genes for the same trait although the form of the gene may be different
separate during meiosis so that each gamete contains only one homologue
all of the above
__D__17. In meiosis, _____ daughter cells are produced, whereas in mitosis, _____ daughter cells are produced.
A. 4 diploid - 2 haploid B. 2 diploid - 4 haploid
C. 2 haploid - 4 diploid D. 4 haploid - 2 diploid
__B__18. Which genotype would be used to perform a testcross?
A. homozygous dominant B. homozygous recessive
C. heterozygous ` D.any of the above
__D__19. For an individual with the genotype AaBb, which of the following is true of the genetic makeup?
A. they are all AaBb B. they are either Aa or Bb
C. they may be A, a, B, or b D.they may be AB, Ab, aB, or ab
__C__20. A cross between plants with red flowers and plants with white flowers produces plants with pink flowers. If two of these pink-flowered plants are crossed, what is the chance that pink-flowered plants will be produced?
A. 0% B. 25% C. 50% D. 75% E. 100%
__C__21. A cross between two black guinea pigs produces some black guinea pigs and some white guinea pigs. The gene makeup of the two parents
A. is probably homozygous black
B. is probably homozygous white
C. is probably heterozygous
D. has no effect on the gene makeup of the offspring.
__D__22. In the case of the sex-linked trait hemophilia, which of the following would have been impossible?
A. a carrier mother passed the gene on to her son.
B. a hemophiliac father passed the gene on to his daughter.
C. a carrier mother passed the gene on to her daughter.
D. a hemophiliac father passed the gene on to his son.
__B__23. In order to get the expected Mendelian ratio in a monohybrid cross, it is important to be able to observe
A. four offspring, one for each box in the Punnett square
B. many offspring
C. one phenotype for each genotype that is expected
D. more recessive phenotypes than dominant phenotypes
__D__24. The genetic makeup of an organism constitutes its ___ and an individual that has the genotype Aa is ___.
A. phenotype; heterozygous B. genotype; homozygous
C. phenotype; homozygous D. genotype; heterozygous
25-28. Use the following information to answer the questions. ( - Set up a pedigree using this information before you try to answer the questions.)
A woman referred to as individual A marries a man, individual B. Both have normal color vision. They have 3 children. Child AB1 is a son with normal color vision. Child AB2 is also a son but he is red green colorblind. The third child, son AB3, is red green colorblind as well. AB1 son marries a woman, S, with normal vision. They have a son who is red green color blind, AB4. Son AB3 marries a woman, Q, with normal vision. They have a daughter that is red green color blind, AB5.
ANSWER KEY:
A. Cc B. cc C. CY D. cY E. could be either CC or Cc
Give the genotype of the following individuals:
___Cc___25. Individual A
__CY____26. Individual B
___Cc___27. Individual S
__Cc____28. Individual Q
__D__29. Individual X's blood type is A. Which of the answers below best describes this blood type?
A. His phenotype is A and his genotype is AA ( I A IA).
B. His genotype is A and his phenotype is AO (I A i).
C. His genotype is A and his phenotype may be AA or AO (IAIA or IA i).
D. His phenotype is A and his genotype may be AA or AO (IA IA or IAi).
__B__30. All of the offspring of a white hen and a black rooster are grey. The simplest explanation for this pattern of inheritance is
A. Incomplete dominance
B. Multiple alleles
C. Sex linkage
D. Independent assortment
__E__31. A man who has blood type B and a woman who has blood type A could have children of which of the following phenotypes?
A. A or B only
B. AB only
C. AB or O
D. A, B, or O
E. A, B, AB, or O
___B_32. To determine whether a plant that exhibits a dominant trait is homozygous or heterozygous, the plant in question should be crossed with one that
A. exhibits the dominant trait
B. exhibits the recessive trait
C. one that is heterozygous
__B__33. Why are sex-linked diseases more common in men than in women?
A. Men acquire two copies of the defective gene during fertilization
B. Men who inherit only one copy of the harmful recessive gene will have the disease
C. The sex chromosomes are more active in men than in women
D. both B and C
__D__34. Whether an allele is dominant or recessive depends on
A. how common the allele is relative to other alleles
B. whether it is inherited from the mother or father
C. which chromosome it is on
D. whether it or another allele is expressed when they are both present
__C__35. In _________, the phenotypic ratio and genotypic ratio is the same.
A. problems dealing with multiple alleles
B. sex linked problems
C. problems dealing with incomplete dominance
D. a test cross
What else can I help you with?
Do cells spend most of their lifetime in interphase?
Yes, cells typically spend the majority of their lifetime in interphase. During interphase, cells grow, replicate their DNA, and perform normal cellular functions before entering mitosis where the cell divides.
Why will most of the cells you view be in interphase?
Most cells spend the majority of their time in interphase because this is when they carry out normal functions such as growth, metabolism, and preparing for cell division. Interphase is a crucial phase in the cell cycle where cells carry out their day-to-day activities before they divide.
Do cells spend more time in mitosis or inter-phase?
Cells spend more time in interphase compared to mitosis. Interphase is the longest phase of the cell cycle, where cells grow and replicate their DNA. Mitosis, on the other hand, is a relatively short phase where the cell divides its nucleus into two identical daughter cells.
Cells spend most of their lifetime in?
The cell spends most of it's life growing and reproducing in the nucleus. The cells reproduce over and over again the produce die and then reproduce. Did you know that a cell takes about 20 minutes spending it's life dividing.
What phase of the cell cycle do cells stay in the longest?
Cells typically spend the longest time in the interphase phase of the cell cycle, specifically in the G1 phase where they grow and carry out normal cellular functions. This phase is followed by the S phase where DNA is synthesized, then the G2 phase before finally entering mitosis.
What part of the cell cycle does the cell spend most of its time and why?
Cells spend most of their time in interphase, specifically in the G1 phase. During this phase, cells grow in size, carry out normal metabolic activities, and prepare for DNA replication in the S phase. Interphase is crucial for ensuring that the cell is properly prepared for division.
Do cells spend most of their lifetime in interphase?
Yes, cells typically spend the majority of their lifetime in interphase. During interphase, cells grow, replicate their DNA, and perform normal cellular functions before entering mitosis where the cell divides.
Why will most of the cells you view be in interphase?
Most cells spend the majority of their time in interphase because this is when they carry out normal functions such as growth, metabolism, and preparing for cell division. Interphase is a crucial phase in the cell cycle where cells carry out their day-to-day activities before they divide.
Do cells spend more time in mitosis or inter-phase?
Cells spend more time in interphase compared to mitosis. Interphase is the longest phase of the cell cycle, where cells grow and replicate their DNA. Mitosis, on the other hand, is a relatively short phase where the cell divides its nucleus into two identical daughter cells.
Which phase of cell cycle does the cell spend most of its time in?
Cells are in the Interphase 90% of the total time during cell cycle. In this phase cells grow and copies chromosomes in preparation for division. Interphase has 3 sections: G1,S and G2. Just during the S phase occur DNA synthesis. In G1 cell produces it's organelles and in G2 the preparations are completed.
Cells spend most of their lifetime in?
The cell spends most of it's life growing and reproducing in the nucleus. The cells reproduce over and over again the produce die and then reproduce. Did you know that a cell takes about 20 minutes spending it's life dividing.
What stage does the cell spend most if its time in the cell cycle?
Interphase, which is the first stage in the cell cycle
What stage do cells spend most of their lives?
It is Interphase.
What phase of the cell cycle do cells stay in the longest?
Cells typically spend the longest time in the interphase phase of the cell cycle, specifically in the G1 phase where they grow and carry out normal cellular functions. This phase is followed by the S phase where DNA is synthesized, then the G2 phase before finally entering mitosis.
Which phases of the cell cycle does interphase include?
Interphase includes three phases: G1 phase, where the cell grows and prepares for DNA replication; S phase, where DNA is synthesized and replicated; and G2 phase, where the cell continues to grow and prepares for cell division.
What is the stage in the cell cycle that is most frequently observed and why?
The stage in the cell cycle that is most frequently observed is interphase. This is because cells spend the majority of their time in interphase, where they grow, carry out normal cellular functions, and prepare for cell division. Interphase consists of three phases: G1 phase, S phase (DNA synthesis), and G2 phase.
What is the longest phase of the cell cycle 90 percent of the time?
The longest phase of the cell cycle, which cells spend about 90% of their time in, is the interphase. This phase includes three stages: G1 (gap 1), S (synthesis), and G2 (gap 2). Cells undergo growth, DNA replication, and preparation for cell division during interphase.
