Bio 101 Review Sheet Test #3 (Chapters 7‚8‚9) Chapter 7 1. 3 effects of mutations a. Good‚ bad‚ silent i. What silent is in terms of amino acids 2. Point mutation 3. Frameshift mutation 4. Main causes of mutation of DNA 5. Which mutations are heritable 6. Definition of allele b. How process of mutation in replication leads to new alleles 7. Transgenic organism c. What it is d. How its created e. Definition of recombinant
Premium DNA Cell Eukaryote
formation‚ Fragmentation/Regeneration‚ Vegetative propagation 3. What are two types of sexual reproduction? (2pts) Meiosis‚ Conjugation 4. What types of cells are produced through mitosis? Meiosis? (2pts) Body Cells 5. How many divisions are there in mitosis? Meiosis? (2pts) one 6. Cells produced through mitosis are genetically identical daughter cells‚ whereas cells produced through meiosis are genetically four genetically different gamete cells. (2pts) 7. Describe the process of binary fission.
Premium Bacteria Organism Eukaryote
It is important that cells go through mitosis because it makes each new cell contain the same gentic information. If meiosis did not occur the reproduction would cease to exist. Mitosis is the process of chromosomes dividing. There are four steps that it goes through. Between cell division the cells are in interphase. During this there is cell growth and the genetic material such as DNA is contained in the chromosomes‚ duplicated so that when the cell divides each new cell has a full version of
Premium Chromosome Mitosis Cell nucleus
female gametes. Meiosis is the process where a diploid cell is divided into four daughter cells and is the process that helps with genetic diversity. There is meiosis 1 which is where no chromatids are copied and only one copy is given to each daughter cell and then meiosis 2 the chromatids separate and given to each gamete. During meiosis chromatids may cross over resulting in the recombination of segments causing genetic diversity of genes because they intermix from each parent. Meiosis helps ensure
Premium Cancer Oncology Breast cancer
Factors Alternatively your genetic make-up also plays a part in your appearance as it affects your height‚ natural eye and hair colour‚ Skin colour‚ gender etc. and this is due to the variety of genes that you end up with from your parents during meiosis. First you need to know that genes are sections of DNA (DNA holds the genetic information) and are found on the surface of chromosomes and they contain instructions to make proteins. The base sequence of the gene determines the Amino acid sequence
Premium DNA Gene Genetics
In humans‚ meiosis occurs during C) the development of sperm 4. Homologous chromosomes move to opposite poles of a dividing cell during B) Meiosis I 8.4.1 Independent Assortment 1. During anaphase I of meiosis A) Homologous chromosomes separate and migrate to opposite poles 2. Which statement regarding independent assortment is true? C) independent
Premium Cell nucleus Cell cycle Chromosome
Normal humans have twenty-three homologous pairs. A female’s egg contains only one representative from each of the 23 chromosome pairs and the male’s sperm contains the other half of the 23 chromosome pairs. Eggs and sperm are formed following meiosis to create the total count of 46 chromosomes in a cell of a normal offspring. A normal human normally has a situation of genetic balance. Each gene is working properly and contributing ideally towards that person’s development. However‚ if a chromosome
Premium Chromosome Gamete Aneuploidy
due to the probabilities being higher due to more factors contributing to the cause of variation such as meiosis and fusion of gametes‚ as well as mutation. Genetic differences are due to the different genes that each individual organism possesses. The differences occur arise in living organisms and change from generation to generation. Genetic variation arises as a result of mutations‚ meiosis and fusion of gametes. Mutations are changes in DNA that result in the offspring containing different characteristics
Premium DNA Gene Genetics
same genes i. Copies may differ IV. Compare and contrast meiosis and mitosis 1. Meiosis A. Form of nuclear division that divides diploid cells into haploid cells i. Essential for sexual reproduction 2. Mitosis A. Used to repair and replace cells in all organisms i. Used for reproduction in asexually reproducing eukaryotes V. How does meiosis keep our chromosome number constant over several generations? 1. Meiosis regulates chromosomes by dividing until there is a set number
Premium DNA Gene
of skin that keeps the testes close or far from the body at an optimal temperature for sperm development. Somniferous tubules are inside each testis‚ and are where sperm are produced by meiosis. About 250 meters (850 feet) of tubules are packed into each testis. Spermatocytes inside the tubules divide by meiosis to produce spermatids that in turn develop into mature sperm. Sperm production takes place in the testes. The testes are in the scrotum. The scrotum is a sac located outside of
Premium Reproductive system