Genetics 1. In which of the following phases there will be a cell with lower qua

Question

Genetics
1. In which of the following phases there will be a cell with lower quantity of DNA?
a)G0 b)G2 c)Prophase d)Metaphase e)Anaphase
———————————————————————
2. In humans, the genetic base to determine the male sex is in presence of:
a) A part of the X chromosome b) One X chromosome c) Balance between X chromosomes and autosome sets d) High hormone levels e) Multiple aleles in different chromosomes
——————————————————————— 3. In humans, the male offspring receives a Y chromosome from: a) Maternal grandparent b) Paternal grandparent c) Maternal grandmother d) Paternal grandmother e) Any of his grandparents (maternal or paternal)
———————————————————————
4. For an eukaryotic organism which DNA [N] sequence is produced in its cell cycle:
a) 1N ——mitosis——2N——Fertilization——1N b) 1N ——meiosis——2N——Fertilization——1N c) 2N ——meiosis——1N——Fertilization——2N d) 2N ——mitosis——1N——Fertilization——2N
———————————————————————
5. A plant species (N=7) and other (N=10) were crossed to form an allotetraploid. Analyze the following statements
I. The total number of chromosomes of the allotetraploid is 17
II. The total number of ligament groups of the allotetraploid is 1
a) I is true and II is false b) I is false and II is true c) Both false d) Both true
———————————————————————
6. A cat with trisomy has the genotype of CCc, he comes from a father with CC and a mother with cc, this trisomy was produced by:
a) Non disjunction with mother b) Non disjunction with father c) Non disjunction with son d) It can’t be determined in which there was Non disjunction
———————————————————————
7. The Non-disjunction on the last question was produced in: a) Meiosis I b) Meiosis II c) Mitosis in the zygote d) All of the above
———————————————————————
8. A lady had 3 kids with Down syndrome. She is phenotypically normal but her cariotype revealed: 45XX and her two -21- chromosomes were fused, and just one Metacentric chromosome was formed
I. The lady is normal II. The lady can only just have kids with Down Syndrome III. The child’s karyotype will be: 47XX + 21; 47Xy +21 IV. The child’s karyotype will be: 46XX t21,21; 46Xy t21,21 V. The lady will only be able to have normal kids if the sperm that fertilizes come from a non disjunctive chromosome 21

Genetics
1. In which of the following phases there will be a cell with lower quantity of DNA?
a)G0 b)G2 c)Prophase d)Metaphase e)Anaphase
———————————————————————
2. In humans, the genetic base to determine the male sex is in presence of:
a) A part of the X chromosome b) One X chromosome c) Balance between X chromosomes and autosome sets d) High hormone levels e) Multiple aleles in different chromosomes
——————————————————————— 3. In humans, the male offspring receives a Y chromosome from: a) Maternal grandparent b) Paternal grandparent c) Maternal grandmother d) Paternal grandmother e) Any of his grandparents (maternal or paternal)
———————————————————————
4. For an eukaryotic organism which DNA [N] sequence is produced in its cell cycle:
a) 1N ——mitosis——2N——Fertilization——1N b) 1N ——meiosis——2N——Fertilization——1N c) 2N ——meiosis——1N——Fertilization——2N d) 2N ——mitosis——1N——Fertilization——2N
———————————————————————
5. A plant species (N=7) and other (N=10) were crossed to form an allotetraploid. Analyze the following statements
I. The total number of chromosomes of the allotetraploid is 17
II. The total number of ligament groups of the allotetraploid is 1
a) I is true and II is false b) I is false and II is true c) Both false d) Both true
———————————————————————
6. A cat with trisomy has the genotype of CCc, he comes from a father with CC and a mother with cc, this trisomy was produced by:
a) Non disjunction with mother b) Non disjunction with father c) Non disjunction with son d) It can’t be determined in which there was Non disjunction
———————————————————————
7. The Non-disjunction on the last question was produced in: a) Meiosis I b) Meiosis II c) Mitosis in the zygote d) All of the above
———————————————————————
8. A lady had 3 kids with Down syndrome. She is phenotypically normal but her cariotype revealed: 45XX and her two -21- chromosomes were fused, and just one Metacentric chromosome was formed
I. The lady is normal II. The lady can only just have kids with Down Syndrome III. The child’s karyotype will be: 47XX + 21; 47Xy +21 IV. The child’s karyotype will be: 46XX t21,21; 46Xy t21,21 V. The lady will only be able to have normal kids if the sperm that fertilizes come from a non disjunctive chromosome 21

Genetics
1. In which of the following phases there will be a cell with lower quantity of DNA?
a)G0 b)G2 c)Prophase d)Metaphase e)Anaphase
———————————————————————
2. In humans, the genetic base to determine the male sex is in presence of:
a) A part of the X chromosome b) One X chromosome c) Balance between X chromosomes and autosome sets d) High hormone levels e) Multiple aleles in different chromosomes
——————————————————————— 3. In humans, the male offspring receives a Y chromosome from: a) Maternal grandparent b) Paternal grandparent c) Maternal grandmother d) Paternal grandmother e) Any of his grandparents (maternal or paternal)
———————————————————————
4. For an eukaryotic organism which DNA [N] sequence is produced in its cell cycle:
a) 1N ——mitosis——2N——Fertilization——1N b) 1N ——meiosis——2N——Fertilization——1N c) 2N ——meiosis——1N——Fertilization——2N d) 2N ——mitosis——1N——Fertilization——2N
———————————————————————
5. A plant species (N=7) and other (N=10) were crossed to form an allotetraploid. Analyze the following statements
I. The total number of chromosomes of the allotetraploid is 17
II. The total number of ligament groups of the allotetraploid is 1
a) I is true and II is false b) I is false and II is true c) Both false d) Both true
———————————————————————
6. A cat with trisomy has the genotype of CCc, he comes from a father with CC and a mother with cc, this trisomy was produced by:
a) Non disjunction with mother b) Non disjunction with father c) Non disjunction with son d) It can’t be determined in which there was Non disjunction
———————————————————————
7. The Non-disjunction on the last question was produced in: a) Meiosis I b) Meiosis II c) Mitosis in the zygote d) All of the above
———————————————————————
8. A lady had 3 kids with Down syndrome. She is phenotypically normal but her cariotype revealed: 45XX and her two -21- chromosomes were fused, and just one Metacentric chromosome was formed
I. The lady is normal II. The lady can only just have kids with Down Syndrome III. The child’s karyotype will be: 47XX + 21; 47Xy +21 IV. The child’s karyotype will be: 46XX t21,21; 46Xy t21,21 V. The lady will only be able to have normal kids if the sperm that fertilizes come from a non disjunctive chromosome 21

Explanation / Answer

1. Option A is correct.

DNA replication occurs in the S-phase. So, all phases that follow S-phase contain duplicated genome.

G0-phase is prior to S phase.

2. None of them

In humans, Y-chromosome is responsible for Male sex.

3. Option B is correct.

Y-chromosome is inherited from father to son.

4. Option C is correct.

2N ——meiosis——1N——Fertilization——2N

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