Asexual vs Sexual Reproduction
... • Diploid cell- A cell that has two copies of each chromosome. • This would include all somatic/body cells • New cell will have an identical copy of DNA • Diploid cells are produced by mitosis • Mitosis is an asexual process. • We call these cells “2N” cells. • Examples would include: liver cells, e ...
... • Diploid cell- A cell that has two copies of each chromosome. • This would include all somatic/body cells • New cell will have an identical copy of DNA • Diploid cells are produced by mitosis • Mitosis is an asexual process. • We call these cells “2N” cells. • Examples would include: liver cells, e ...
File
... 2.2 Cousin marriages are more likely to result in children affected by an autosomal recessive disorder than marriages between unrelated parents [ ...
... 2.2 Cousin marriages are more likely to result in children affected by an autosomal recessive disorder than marriages between unrelated parents [ ...
Meiosis - Learning on the Loop
... One chromosome of each pair comes from an individual’s mother, the other comes from their father ...
... One chromosome of each pair comes from an individual’s mother, the other comes from their father ...
10.1 Meiosis Notes - Twanow
... disadvantages of both asexual and sexual reproduction? Asexual – only requires one parent (advantage), but offspring are clones (disadvantage for adaptation) Sexual – requires two parents (disadvantage), produces unique combinations and genetic diversity (advantage for adaptation) ...
... disadvantages of both asexual and sexual reproduction? Asexual – only requires one parent (advantage), but offspring are clones (disadvantage for adaptation) Sexual – requires two parents (disadvantage), produces unique combinations and genetic diversity (advantage for adaptation) ...
Meiosis Intro BTR
... body cells, which make up almost all of your tissues which are located in your reproductive organs. They gametes. Gametes are sex cells. They include eggs ...
... body cells, which make up almost all of your tissues which are located in your reproductive organs. They gametes. Gametes are sex cells. They include eggs ...
Meiosis 1. What would happen if the chromosomes didn`t line up on
... In the end, the two daughter cells would have uneven amounts of chromosomes. For example, one cell would have too many and the other would not have enough 2. What is this case called? Aneuploidy ...
... In the end, the two daughter cells would have uneven amounts of chromosomes. For example, one cell would have too many and the other would not have enough 2. What is this case called? Aneuploidy ...
Section 7.2 – Meiosis Understanding Concepts #1
... 8. Genes code for the same characteristic but they may not be identical. For example, the gene for eye colour is located on the same position on the chromosome contributed by your mom and dad, but your dad might have contributed a gene for blue eyes while your mom contributed a gene for ...
... 8. Genes code for the same characteristic but they may not be identical. For example, the gene for eye colour is located on the same position on the chromosome contributed by your mom and dad, but your dad might have contributed a gene for blue eyes while your mom contributed a gene for ...
Chapter 13 1. is when two parents give rise to an offspring that have
... 2. ______________________ is the type of cell division in sexually reproducing organisms that results in cells with half the chromosome number of the original cell. This type of cell division only occurs in cells that make ______________________. In the life cycle of an organism, one _______________ ...
... 2. ______________________ is the type of cell division in sexually reproducing organisms that results in cells with half the chromosome number of the original cell. This type of cell division only occurs in cells that make ______________________. In the life cycle of an organism, one _______________ ...
The Mechanism of X inactivation
... • Nondisjunction refers to the failure of chromosomes to segregate properly during anaphase • Meiotic nondisjunction can produce haploid cells that have too many or too few chromosomes – If such a gamete participates in fertilization • The resulting individual will have an abnormal chromosomal compo ...
... • Nondisjunction refers to the failure of chromosomes to segregate properly during anaphase • Meiotic nondisjunction can produce haploid cells that have too many or too few chromosomes – If such a gamete participates in fertilization • The resulting individual will have an abnormal chromosomal compo ...
Unit Genetics Test Review
... 2. What are hybrids? The offspring from crosses between parents with different traits are hybrids 3. What are the offspring of the F1 generation called? F2 4. Genes are chemical factors that determine traits. The different forms of a gene are called Alleles 5. The physical appearance of an organism ...
... 2. What are hybrids? The offspring from crosses between parents with different traits are hybrids 3. What are the offspring of the F1 generation called? F2 4. Genes are chemical factors that determine traits. The different forms of a gene are called Alleles 5. The physical appearance of an organism ...
Meiosis and Sexual Life Cycles
... In cells where synthesis has occurred, each appears as sister ...
... In cells where synthesis has occurred, each appears as sister ...
Opening Question Bank for Meiosis
... List two types of cells that will never go through meiosis? If the normal amount of chromosomes (karyotype) for an organism is 40, what the number be in a sex cell(sperm or egg)? In mitosis, the cell divides once, into two daughter cells. But, in meioss, the cell divides ______ into ______ daughter ...
... List two types of cells that will never go through meiosis? If the normal amount of chromosomes (karyotype) for an organism is 40, what the number be in a sex cell(sperm or egg)? In mitosis, the cell divides once, into two daughter cells. But, in meioss, the cell divides ______ into ______ daughter ...
BDOL Interactive Chalkboard
... coil up (thicken) & nuclear memb disappears b. spindle forms c. tetrad = h.c. line up with each other gene by gene ...
... coil up (thicken) & nuclear memb disappears b. spindle forms c. tetrad = h.c. line up with each other gene by gene ...
Keystone Vocabulary 61-70
... 66. Allele Frequency: The measure of the relative frequency of an allele at a genetic locus in a population: expressed as a proportion or percentage. 67. Crossing over: An exchange of genetic material between homologous chromosomes during anaphase I of meiosis; contributes to the genetic variability ...
... 66. Allele Frequency: The measure of the relative frequency of an allele at a genetic locus in a population: expressed as a proportion or percentage. 67. Crossing over: An exchange of genetic material between homologous chromosomes during anaphase I of meiosis; contributes to the genetic variability ...
Chapter 7 directed reading
... The process by which sperm is produced in male animals 9. How many sperm are made during spermatogenesis ? 4 from 1 haploid ...
... The process by which sperm is produced in male animals 9. How many sperm are made during spermatogenesis ? 4 from 1 haploid ...
Gametes Have a Single Set of Chromosomes
... • A cell with two homologous chromosomes is diploid (2n) • Gametes (egg & sperm) are haploid (1n) because they only have a single set of chromosomes • Fusion of the haploid cells produces a diploid zygote during fertilization ...
... • A cell with two homologous chromosomes is diploid (2n) • Gametes (egg & sperm) are haploid (1n) because they only have a single set of chromosomes • Fusion of the haploid cells produces a diploid zygote during fertilization ...
The DNA molecule exits for most of the cell cycle as
... cell cycle as chromatin, a long, uncoiled single strand. Chromatin will coil around proteins called histones to form chromosomes. Chromosomes are packages of DNA which can be transferred to new daughter cells when the cell reproduces through mitosis. ...
... cell cycle as chromatin, a long, uncoiled single strand. Chromatin will coil around proteins called histones to form chromosomes. Chromosomes are packages of DNA which can be transferred to new daughter cells when the cell reproduces through mitosis. ...
Advanced Genetics: Karyotypes and Pedigrees
... • What is a karyotype? • What is the purpose of a karyotype? ...
... • What is a karyotype? • What is the purpose of a karyotype? ...
Class Presentation Questions for CH 11
... 8. Meiosis usually involves two distinct divisions called ____________________ & ___________________-. 9. The number of chromosomes in a gamete is represented by the symbol_________. 10. If an organisms diploid # is 46, what is its haploid #? 11. An organism’s gametes have ___________________ the nu ...
... 8. Meiosis usually involves two distinct divisions called ____________________ & ___________________-. 9. The number of chromosomes in a gamete is represented by the symbol_________. 10. If an organisms diploid # is 46, what is its haploid #? 11. An organism’s gametes have ___________________ the nu ...
DNA-Chromosomes-Genes-Genome student notesheet
... • There are 23 pairs of chromosomes in the _____________________ of any one of your cells. • Each chromosome has a single strand of _____________________, which carries the code for a couple of thousand _____________________. ...
... • There are 23 pairs of chromosomes in the _____________________ of any one of your cells. • Each chromosome has a single strand of _____________________, which carries the code for a couple of thousand _____________________. ...
Review2
... hypertonic, isotonic and hypotonic What part of the phospholipid is attracted to water? Know the molecules responsible for membrane transport. Cell Division cell reproduction: binary fission, mitosis and meiosis asexual vs. sexual reproduction haploid vs. diploid chromosomes homologous chromatids he ...
... hypertonic, isotonic and hypotonic What part of the phospholipid is attracted to water? Know the molecules responsible for membrane transport. Cell Division cell reproduction: binary fission, mitosis and meiosis asexual vs. sexual reproduction haploid vs. diploid chromosomes homologous chromatids he ...
Ploidy
Ploidy is the number of sets of chromosomes in a cell. Usually a gamete (sperm or egg, which fuse into a single cell during the fertilization phase of sexual reproduction) carries a full set of chromosomes that includes a single copy of each chromosome, as aneuploidy generally leads to severe genetic disease in the offspring. The gametic or haploid number (n) is the number of chromosomes in a gamete. Two gametes form a diploid zygote with twice this number (2n, the zygotic or diploid number) i.e. two copies of autosomal chromosomes. For humans, a diploid species, n = 23. A typical human somatic cell contains 46 chromosomes: 2 complete haploid sets, which make up 23 homologous chromosome pairs.Because chromosome number is generally reduced only by the specialized process of meiosis, the somatic cells of the body inherit and maintain the chromosome number of the zygote. However, in many situations somatic cells double their copy number by means of endoreduplication as an aspect of cellular differentiation. For example, the hearts of two-year-old children contain 85% diploid and 15% tetraploid nuclei, but by 12 years of age the proportions become approximately equal, and adults examined contained 27% diploid, 71% tetraploid and 2% octaploid nuclei.Cells are described according to the number of sets present (the ploidy level): monoploid (1 set), diploid (2 sets), triploid (3 sets), tetraploid (4 sets), pentaploid (5 sets), hexaploid (6 sets), heptaploid or septaploid (7 sets), etc. The generic term polyploid is frequently used to describe cells with three or more sets of chromosomes (triploid or higher ploidy).