There are abnormal chromosomes ( abnormal in their size, number, shape..etc.) in tumor cells. How might...
There are abnormal chromosomes ( abnormal in their size, number, shape..etc.) in tumor cells. How might that contradict Mendelian expectations of two copies of each gene in a normal adult cell?
Homework Answers
Mendal has given three laws of inheritance which are the law of dominance, the law of segregation and the law of independent assortment. The law of segregation states that there are two copies of a gene which we call allele and only one of these are passed to the offsprings. The law of independent assortment states that the sorting of alleles is independent of one another. This is an independent event which copy will be passed to the offsprings.
If there is an abnormality, it means the amount of DNA present is higher or lower and also there is more than one copy of the gene are present. There are examples where trisomy or monosomy of a chromosome is present. Which means either three or a single copy of the gene is present which opposes Mendel's law.
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There are abnormal chromosomes ( abnormal in their size,
number, shape..etc.) in tumor cells. How might...
points Cells from advanced malignant tumors often have very bromal chromosomes and an abnormal number of...
points Cells from advanced malignant tumors often have very bromal chromosomes and an abnormal number of chromosomes What might explain the association between malignant tumors and chromosomal abnormalities? A Cancer cells are arrested in the stage of the cell cycle B. Cancer cells use enzymes to break their chromosomes into smaller pieces, increasing the surface area of genes. C. Cancer cells do not have cell cycle checkpoints in place to prevent cells with damaged chromosomes from dividing D. Cancer cells...
The number of chromosomes in the wing muscle cells of Blue Morpha Butterfly is six. i)...
The number of chromosomes in the wing muscle cells of Blue Morpha Butterfly is six. i) Using chromosomes with different morphologies (different positions of the ce lengths), draw the structure of these chromosomes in this adult female in a) metaphase of mitosis; b) anaphase I of meiosis; c) metaphase II of meiosis; d) the gametes meiosis. ii) Your adult female is heterozygous for two independent genes, the Tiny locus Tt and the Golden wing locus Gg. Label ALL copies of...
The number of cells in a tumor doubles every 15 months. If the tumor begins with...
The number of cells in a tumor doubles every 15 months. If the tumor begins with a single cell, how many cells will there be after 2 years after 3 years? How may cells will there be after 2 years? (Do not round until the final answer. Then round to the nearest whole number as needed) How many cells will there be after 3 years? (Do not round until the final answer. Then round to the nearest whole number as...
The number of cells in a tumor doubles every 1.5 months. If the tumor begins with...
The number of cells in a tumor doubles every 1.5 months. If the tumor begins with a single cell, how many cells will there be after 2 years after 3 years How may cells will there be after 2 years? 59 (Do not round until the final answer. Then round to the nearest whole number as needed.) How many cells will there be after 3 years? er of mere (Do not round until the final answer. Then round to the...
Check Your Understanding 3.1 1 What are chromosomes made of? number 2 How many chromosomes are...
Check Your Understanding 3.1 1 What are chromosomes made of? number 2 How many chromosomes are in a human somatic cell? 46 chromosomes 3 The term used to refer to this full complement of chromosomes is the 4 How many chromosomes are in human gametes? 5 This is referred to as the number 6 Wa chicken's skin cell has 78 chromosomes, how many chromosomes would the chicken's sperm cell have? 7 How can we distinguish the 23 types of chromosomes...
pleas i need help this question . thanks The number of chromosomes in the wing muscle...
pleas i need help this question . thanks
The number of chromosomes in the wing muscle cells of Blue Morpha Butterfly is six. i) Using chromosomes with different morphologies (different positions of the centromere and/or different lengths), draw the structure of these chromosomes in this adult female in a) metaphase of mitosis; b) anaphase 1 of meiosis; c) metaphase II of meiosis; d) the gametes resulting from this part c meiosis. ii) Your adult female is heterozygous for two independent...
1. Represent all chromosomes in a 2n = 4 cell before replication. Number the homologous chromosomes...
1. Represent all chromosomes in a 2n = 4 cell before replication. Number the homologous chromosomes as you would in a karyotype (e.g., Chromosome 1, Chromosome 2). 2. Gene F is on Chromosome 1 and gene G is on Chromosome 2. This cell carries two different alleles of gene F (called F and f), and two different alleles of gene G (called G and g). Label these alleles on the unreplicated chromosomes that you drew above. 3. In the space...
1.Human cells contain 46 chromosomes. Meiosis in humans results in a.two daughter cells containing 23 chromosomes...
1.Human cells contain 46 chromosomes. Meiosis in humans results in a.two daughter cells containing 23 chromosomes each. b.two daughter cells containing 46 chromosomes each. c.four daughter cells containing 23 chromosomes each. d.four daughter cells containing 46 chromosomes each. 2.A fruit fly male has a diploid chromosome number of 8, how many chromosomes would be found in his sperm cells? a.1. b.4. c.8. d.16. e.23 3.A normal individual who is a carrier for an x-linked trait like hemophilia _____. SELECT ALL...
As an animal’s body size increases, the number of cells in the organism also increases. Why...
As an animal’s body size increases, the number of cells in the organism also increases. Why must the number of cells increase in order to increase body size? Why can’t there simply be the same number of cells, each with larger volume? All animals begin life as a single-celled zygote, but become multicellular through development. The increase in number of cells must come from an increased number of mitotic divisions and this in turn may increase the risk of developing...
20. How many cells are formed at the end of Meiosis I & how many copies...
20. How many cells are formed at the end of Meiosis I & how many copies of chromosomes does each cell have?_ 21. Is DNA copied before Meiosis II? _ 22. How many cells form at the end of Meiosis II and how many chromosomes do they contain? • 23. Oogenesis ultimately gives rise to (one ovum, four ova) with the Chaploid, diploid) number of chromosomes. 24. A sperm cell is a (gamete, zygote), and is (haploid, diploid). 25. When...
points Cells from advanced malignant tumors often have very bromal chromosomes and an abnormal number of chromosomes What might explain the association between malignant tumors and chromosomal abnormalities? A Cancer cells are arrested in the stage of the cell cycle B. Cancer cells use enzymes to break their chromosomes into smaller pieces, increasing the surface area of genes. C. Cancer cells do not have cell cycle checkpoints in place to prevent cells with damaged chromosomes from dividing D. Cancer cells...
The number of chromosomes in the wing muscle cells of Blue Morpha Butterfly is six. i) Using chromosomes with different morphologies (different positions of the ce lengths), draw the structure of these chromosomes in this adult female in a) metaphase of mitosis; b) anaphase I of meiosis; c) metaphase II of meiosis; d) the gametes meiosis. ii) Your adult female is heterozygous for two independent genes, the Tiny locus Tt and the Golden wing locus Gg. Label ALL copies of...
The number of cells in a tumor doubles every 15 months. If the tumor begins with a single cell, how many cells will there be after 2 years after 3 years? How may cells will there be after 2 years? (Do not round until the final answer. Then round to the nearest whole number as needed) How many cells will there be after 3 years? (Do not round until the final answer. Then round to the nearest whole number as...
The number of cells in a tumor doubles every 1.5 months. If the tumor begins with a single cell, how many cells will there be after 2 years after 3 years How may cells will there be after 2 years? 59 (Do not round until the final answer. Then round to the nearest whole number as needed.) How many cells will there be after 3 years? er of mere (Do not round until the final answer. Then round to the...
Check Your Understanding 3.1 1 What are chromosomes made of? number 2 How many chromosomes are in a human somatic cell? 46 chromosomes 3 The term used to refer to this full complement of chromosomes is the 4 How many chromosomes are in human gametes? 5 This is referred to as the number 6 Wa chicken's skin cell has 78 chromosomes, how many chromosomes would the chicken's sperm cell have? 7 How can we distinguish the 23 types of chromosomes...
pleas i need help this question . thanks
The number of chromosomes in the wing muscle cells of Blue Morpha Butterfly is six. i) Using chromosomes with different morphologies (different positions of the centromere and/or different lengths), draw the structure of these chromosomes in this adult female in a) metaphase of mitosis; b) anaphase 1 of meiosis; c) metaphase II of meiosis; d) the gametes resulting from this part c meiosis. ii) Your adult female is heterozygous for two independent...
20. How many cells are formed at the end of Meiosis I & how many copies of chromosomes does each cell have?_ 21. Is DNA copied before Meiosis II? _ 22. How many cells form at the end of Meiosis II and how many chromosomes do they contain? • 23. Oogenesis ultimately gives rise to (one ovum, four ova) with the Chaploid, diploid) number of chromosomes. 24. A sperm cell is a (gamete, zygote), and is (haploid, diploid). 25. When...
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