13) Independent assortment of chromosomes is a resulit of 13) A) the random natu

Question

13) Independent assortment of chromosomes is a resulit of 13) A) the random nature of the fertilization of ova by sperm B) the random and independent way in which each pair of homologous cheomosomes at the metaphase plate during meiosis L C) the random distribution of the sister chromatids to the two daughte chromatids to the two daughter cells during anaphase D) the relatively small degree of homology shared by the X and Y chromosomes E) All of the above 14) For a species with a haploid number of 23 chromosomes, how many different combinations of 14) chromosomes ane possible for the gametes? A) 46 B) 23 C) 460 D) 920 E) About 8 million 15 15) A particular cell has half as much DNA as some other cells in a mitotically active tissue. The oll in question is most likely in B) G2. C) prophase D) G E) anaphase 16) 16) If there are 20 chromatids in a cel, how many centromeres are there D) 30 E) 80 B) 20 C 40 A) 10

Explanation / Answer

13. Answer : (E) All of the above

Explaination : The Principle of Independent Assortment describes how different genes independently separate from one another when reproductive cells develop. Independent assortment of genes and their corresponding traits was first observed by Gregor Mendel in 1865 during his studies of genetics in pea plants.

independent assortment of genes occurs during meiosis in eukaryotes. Meiosis is a type of cell division that reduces the number of chromosomes in a parent cell by half to produce four reproductive cells called gametes. In humans, diploid cells contain 46 chromosomes, with 23 chromosomes inherited from the mother and a second similar set of 23 chromosomes inherited from the father. Pairs of similar chromosomes are called homologous chromosomes. During meiosis, the pairs of homologous chromosome are divided in half to form haploid cells, and this separation, or assortment, of homologous chromosomes is random. This means that all of the maternal chromosomes will not be separated into one cell, while the all paternal chromosomes are separated into another. Instead, after meiosis occurs, each haploid cell contains a mixture of genes from the organism's mother and father

14. (E) ABout 8 million

15. (D) G1

Explanation : A cell in G1 phase undergoes in S phase (Synthesis Phase) in which Replication of DNA take place and DNA quantity becomes double. It will be half when a cell undergoes cytokinesis (Cell Division)

16. A (10)

Explanation : A Single chromosome contains two sister chromatid and both of these and connected at centromere.

therefore no. of centromere is 10.

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.