The different combinations of the G and L alleles by the end of Meiosis illustrates the Mendelian concept of: Question 10 options: Segregation Crossing over during synapsis Independent Assortment Reduction of chromosomes
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The different combinations of the G and L alleles by the end of Meiosis illustrates the Mendelian concept of:
Question 10 options:
|
Segregation |
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Crossing over during synapsis |
|
Independent Assortment |
|
Reduction of chromosomes |
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- In Anaphase 1 homologous chromosomes are separated from each other resulting in intermediate cells that have either the maternal or paternal copy of any given chromosome. This illustrates the mendelian law of: Question 9 options: Reduction of chromosomes Crossing over during synapse Segregation Independent AssortmentMendel's Law of Independent Assortment states that: the members of a pair of homologous chromosemes assort independently of each other during gamete formation none of these the members of a pair of homologous chromosomes separate from each other during gamete formati different pairs of homologous chromosomes assort independently of each other during gamete formation different pairs of homologous chromosomes separate from each other during gamete formationAn individual heterozygous for a reciprocal translocation possesses the following chromosomes: A B • C D E F G A B • C D V W X R S • T U E F G R S • T U V W X Q. Diagram the alternate, adjacent-1, and adjacent-2 segregation patterns in anaphase I of meiosis.
- What aspect of chromosome behaviour most clearly accounts for Mendel's law of segregation? Crossing-over between homologous chromosomes during prophase I of meiosis Movement of sister chromatids to opposite poles at anaphase II of meiosis Movement of homologous chromosomes to opposite poles at anaphase I of meiosis Independent alignment of different homologous pairs on the metaphase I spindle Replication of chromosomes prior to meiosisWhat aspect of chromosome behavior most clearly accounts for Mendel's law of segregation? Movement of sister chromatids to opposite poles at anaphase Il of meiosis. Movement of homologous chromosomes to opposite poles at anaphase I of meiosis. Crossing over between homologous chromosomes during prophase I of meiosis. Replication of chromosomes prior to meiosis. Independent alignment of different homologous pairs on the metaphase I spindle.The drawings below represent four possible cells produce by meiosis in a cell pf the genotype AaBb. Examine the figures below and answer the questions that follow: 1. How many different types of cells are produced at the end of Meiosis I? A *Write your answer as a word, not a number 2. Is there any other way you could have arranged the chromosomes? For example, a. Could A and a be arranged so that both go to the same cell after Metaphase I (Yes/No)? B b. Could B and b be arranged so that both go to the same cell after Metaphase I (Yes.No)? C c. Could A and B be arranged so that both go to the same cell after Metaphase I (Yes/No)? D d. Could A and b be arranged so that both go to the same cell after Metaphase I?(Yes./No) E 3. Are the daughter cells haploid, or diploid? F 4. Do the daughter cells have the same genetic composition as the original cell (Yes/No)? G 5. Focus on the four daughter cells…
- The inactivation of one of the X chromosomes forms a structure known as a(n): telomere centromere autosome Barr body A man who carries a dominant X-linked trait will pass this trait on to: all of his sons all of his daughters half of his daughters and half of his sons half of his daughters An individual possessing two copies of the same sex chromosomes is known as: Question 3 options: heterogametic homozygous diploid homogameticA cell has four pairs of chromosomes. Assuming that crossing over does not occur, what is the probability that a gamete will contain all of the paternal chromosomes? If n equals the number of chromosomes in a set, which of the following expressions can be used to calculate the probability that a gamete will receive all of the paternal chromosomes: (1/2)n, (1/2)n–1, or n1/2?Hi, I'm having some trouble with this practice problem from my study guide. If anyone can explain it it would be very helpful! Sometimes nondisjunction will occur in a parent that has normal chromosome numbers and result in an offspring that has abnormal number of chromosomes. The phenotype of the affected offspring will often allow geneticists to determine in which parent and during which division of meiosis the nondisjunction occurred. In each of the examples below, assume the parents have a normal diploid chromosome complement. EXAMPLE 1: A man with the X-linked dominant condition “brown tooth enamel” and a woman with normal tooth enamel produce a son with brown tooth enamel. Let’s call the allele for brown tooth enamel “XB” and normal tooth enamel “Xb”. In which parent did the nondisjunction occur? Explain and/or illustrate Did nondisjunction occur at meiosis I or II? Explain and/or illustrate. What sex chromosomes are in the child’s somatic cells? EXAMPLE 2: The parents in the…
- In regards to MEIOSIS, give the order of the following events in terms of chromosome number. Question 8 options: meiosis 2 and cytokinesis a total of four cells, each containing 23 chromosomes one cell containing 46 chromosomes meiosis 1 and cytokinesis one cell containing 92 chromosomes two cells containing 46 chromosomesIn regards to MEIOSIS, give the order of the following events in terms of chromosome number. Question 48 options: meiosis 1 and cytokinesis one cell containing 92 chromosomes meiosis 2 and cytokinesis a total of four cells, each containing 23 chromosomes one cell containing 46 chromosomes two cells containing 46 chromosomesHi, I'm having some trouble with this practice problem from my study guide. If anyone can explain it it would be very helpful! Sometimes nondisjunction will occur in a parent that has normal chromosome numbers and result in an offspring that has abnormal number of chromosomes. The phenotype of the affected offspring will often allow geneticists to determine in which parent and during which division of meiosis the nondisjunction occurred. In each of the examples below, assume the parents have a normal diploid chromosome complement. A man with the X-linked dominant condition “brown tooth enamel” and a woman with normal tooth enamel produce a son with brown tooth enamel. Let’s call the allele for brown tooth enamel “XB” and normal tooth enamel “Xb”. EXAMPLE 1: The parents in the family above produce another son, this time with two Y chromosomes and normal tooth enamel. In which parent did the nondisjunction occur? Explain and/or illustrate. Did nondisjunction occur at meiosis I or II?…