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- The gametes in the image below could have formed from which parent?
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A. Male
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B. Female
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C. Male or female
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D. Neither male nor female
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- Dogs have a diploid chromosome number of 78. How many chromosomes do their gametes have? a. 39 c. 156 b. 78 d. 234Which statement best describes the genetic content of the two daughter cells in prophase II of meiosis? a. haploid with one copy of each gene b. haploid with two copies of each gene c. diploid with two copies of each gene d. diploid with four copies of each geneA secondary spermatocyte has 12 chromosomes. How many chromosomes will be found in the primary spermatocyte that gave rise to it? a. 6b. 12c. 18d. 24
- This structure is the site of fertilization? a.E b.C c.A dD e.BWhat makes sexually reproduced offspring genetically different from their parents? a. Genetic recombination during mitosis b. Genetic recombination during meiosis c. Sexual reproduction does not produce genetically different offspring d. Crossing over during mitosisIf meiosis produce haploid cells, how is the diploid numberrestored for those organisms that spend most of their life cycle in the diploid state? a. DNA replication b. reverse transcription c. synapsis d. fertilization
- Which correctly describes a genetic trait that is sex-linked in humans? A. The trait appears only in males or only in females, but not in both. В. The gene is always carried on the Y chromosome. C. The trait is expressed only during the act of reproduction. D. The trait is carried on the X or Y chromosome. 3.Which form of reproduction can result from damage to the original animal? a. asexual b. fragmentation c. budding d. parthenogenesisRefer to the diagram of gametogenesis to answer item 23 - 25 23. Which of the structure contains haploid (n) number of chromosomes? A. 1 B. 5 C. 6 D. 4 24. Which of the structures contains diploid (2n) number of chromosomes? A. 1 and 2 B. 3 and 4 C. 6 and 8 D. 7 and 925. What is the ratio of spermatids and ootid produced in Gametogenesis? A. 4 spermatids : 4 ootids B. 4 spermatids : 2 ootids C. 1 spermatid : 4 ootids D. 4 spermatids : 1 ootid
- The process forming the neural tube and plate via the intercalation of cells along the medial-lateral axis and extension along the anterior-posterior axis occurs is called? a. neurulation b. embryogenesis c. convergent extension d. morphogenesisWhich primary germ layer gave rise to the cells that eventually became the central nervous system? a. endoderm b. ectoderm c. acrosome d. mesodermIf a trait is sex linked, what chromosomes could the trait be on? A. chromosome pairs 1 - 22 B. Y C. X or Y chromosome D. X
