An individual is known to have a genotype Aa Bb Dd. It is also known that gene A, gene B, and gene C all assort independently of each other. Draw the chromosomes present in a diploid cell. Label the genes.
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Oogenesis
The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase.
Cell Division
Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons:
An individual is known to have a genotype Aa Bb Dd. It is also known that gene A, gene B, and gene C all assort independently of each other. Draw the chromosomes present in a diploid cell. Label the genes.
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- An 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.An 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. Draw the pairing arrangement of these chromosomes in prophase I of meiosis.USING TWO DIFFERENT COLORS TO SIGNIFY THE MATERNAL AND PATERNAL CHROMOSOMES, DRAW THE RESPECTIVE CELLS IN EACH LABELED PHASE OF MITOSIS AND MEIOSIS. THE CHROMOSOME NUMBER WILL BE "4" AND SHOULD BE REPRESENTED AS TWO HOMOLOGOUS PAIRS. MAKE SURE YOU USE TWO DIFFERENT SIZES FOR EACH OF THE PAIRS. BELOW EACH PHASE, BRIEFLY DESCRIBE WHAT HAPPENS. MITOSIS ΜEIOSIS I MEIOSIS II Crossing over needs to be illustrated ACCURATE CELL NUMBER IS NEEDED МЕТАРНАSE ΑΝΑΡHASE МЕТАРНASEI ANAPHASE I МЕТАРНАSE II ANAPHASE II
- If the DNA content of a diploid cell in the G1 phase of the cell cycle is X, then the DNA content of the same cell at metaphase of meiosis would be 2X 0.25X 0.5X 4XA color-blind woman with Turner syndrome (XO) has a father who is color blind.Given that the gene for the color-blind condition is recessive and X-linked, provide a likely explanation for the origin of the color-blind and chromosome constitution in the color-blind woman. nondisjunction in the mother in meiosis I or II nondisjunction in the father at meiosis I no abnormalities had to occur to produce this daughter nondisjunction in the father in meiosis I or II nondisjunction in both the mother and father in meiosis I.In humans, each cell normally contains a diploid (2n) chromosome number of 46. Say that a human body cell and sex cell will undergo mitosis and meiosis respectively, provide the number of chromosomes in each cell for every stage. Stage of Mitosis Number of Stages of Meiosis Number of Chromosomes in Chromosomes in One Cell One Cell Prophase 2n = Prophase 1 2n = Prometaphase 2n = Prometaphase 1 2n = Metaphase 2n = Metaphase 1 2n = Anaphase 2n = Anaphase 1 2n = Telophase and Cytokinesis Telophase 1 and Cytokinesis 2n = n = Prophase 2 Prometaphase 2 n = Metaphase 2 n = Anaphase 2 = u Telophase 2 and Cytokinesis n =
- A diploid (2n) trihybrid individual with the genotype EeFfGg can make eight genetically different gametes. Loci E/e and F/f are on chromosome 1 and locus G/g is on chromosome 2. Explain how a gamete containing the alleles e, f and g may be produced by meiosis. Refer specifically to meiotic events occurring during Prophase I, Metaphase I, Anaphase I and Anaphase II. (NB: remember to refer to the organism above).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 homogameticFor an organism with 3 pairs of chromosomes (6 total chromosomes, 2n = 6), draw chromosome diagrams for the following phases of meiosis: prophase I, metaphase I, anaphase I, telophase I, prophase II, metaphase II, anaphase II & telophase II. Be sure to draw the correct number of chromosomes and the correct number of chromatids per chromosome. Use a different color to represent each chromosome type (for example, use blue to indicate all copies of chromosome 1, red for all copies of chromosome 2, and green for all copies of chromosome 3).
- A diploid cell has 15 picograms of DNA in G₁ phase. If this cell is a germ line cell that undergoes meiosis, how much DNA will each daughter cell contain at the end of meiosis I? How much DNA will each daughter cell contain at the end of meiosis II? MI = 30 pg: MII = 15 pg O MI = 15 pg; MII = 15 pg MI = 7.5 pg; MII = 15 pg O MI = 15 pg: MII = 7.5 pgA phenotypically normal individual has the following combinations of normal and abnormal chromosomes:The normal chromosomes are shown on the left in each pair.Suggest a series of events (breaks, translocations, crossovers, etc.)that may have produced this combination of chromosomes.An individual is heterozygous for a reciprocal translocation, with the following chromosomes: A • B C D E F A • B C V W X R ST • U D E F R ST • U V W X Q. Draw a picture of these chromosomes pairing in prophase I of meiosis.