Question 1 The female gamete is the spore. sperm. egg. zygote
... 1. the formation of a close association between homologous chromosomes during prophase ...
... 1. the formation of a close association between homologous chromosomes during prophase ...
Example of a food chain
... humans, tail length in mice, body length in salmon. Discontinuous variation A characteristic shows discontinuous variation if it can be used to divide up the members of a species into 2 or more distinct groups e.g. human blood group, tongueroller/non-roller, human fingerprint type. FERTILISATION M ...
... humans, tail length in mice, body length in salmon. Discontinuous variation A characteristic shows discontinuous variation if it can be used to divide up the members of a species into 2 or more distinct groups e.g. human blood group, tongueroller/non-roller, human fingerprint type. FERTILISATION M ...
Sunken Lesson Animal Growth and Heredity
... • Then they go through a second stage of division where they split their chromosomes in half. • Gametes are formed with half the chromosomes of the parent cells • Two gametes join to form a one new cell ...
... • Then they go through a second stage of division where they split their chromosomes in half. • Gametes are formed with half the chromosomes of the parent cells • Two gametes join to form a one new cell ...
13_Lectures_PPT
... Comparison of Asexual and Sexual Reproduction • Asexual reproduction, one parent produces genetically identical offspring by mitosis • Sexual reproduction, two parents give rise to offspring that have unique combinations of genes inherited from the two parents ...
... Comparison of Asexual and Sexual Reproduction • Asexual reproduction, one parent produces genetically identical offspring by mitosis • Sexual reproduction, two parents give rise to offspring that have unique combinations of genes inherited from the two parents ...
Biology 101 Study Guide -Test #3 Chapters 8
... What are Mendel’s two laws? What do these really mean? Hint: First law applies to alleles of a single gene. The second law applies to alleles of more than one gene. Explain these two in terms of chromosomal behavior during meiosis. (See module 9.16) ...
... What are Mendel’s two laws? What do these really mean? Hint: First law applies to alleles of a single gene. The second law applies to alleles of more than one gene. Explain these two in terms of chromosomal behavior during meiosis. (See module 9.16) ...
HSLS4-1
... Desired Results Students will be able to… 1. Compare and contrast asexual and sexual types of reproduction that occur on the cellular and multicellular organism levels. Understand how asexual reproduction differs from sexual reproduction. Know the advantages and disadvantages of each. 2. Explain thr ...
... Desired Results Students will be able to… 1. Compare and contrast asexual and sexual types of reproduction that occur on the cellular and multicellular organism levels. Understand how asexual reproduction differs from sexual reproduction. Know the advantages and disadvantages of each. 2. Explain thr ...
to print
... which they need to do to grow or replace old cells, they do so through a process called mitosis. • In mitosis, the chromosomes pair up and split, creating two new cells, which are in theory identical to each other. ...
... which they need to do to grow or replace old cells, they do so through a process called mitosis. • In mitosis, the chromosomes pair up and split, creating two new cells, which are in theory identical to each other. ...
Linkage Questions - Welcome to Cherokee High School
... species. This is reshuffling of the genes resulting in new combinations ...
... species. This is reshuffling of the genes resulting in new combinations ...
Genes
... Tay-Sachs Disease: Causes destruction of nervous system, blindness, and death during early childhood. Cystic Fibrosis: Makes breathing and digestion difficult, its caused by abnormal genes, one from each parent. Down Syndrome: Caused by a chromosomal abnormality known as Trisony-21,( the presence of ...
... Tay-Sachs Disease: Causes destruction of nervous system, blindness, and death during early childhood. Cystic Fibrosis: Makes breathing and digestion difficult, its caused by abnormal genes, one from each parent. Down Syndrome: Caused by a chromosomal abnormality known as Trisony-21,( the presence of ...
Topic 3 powerpoint notes
... • ______ ___________also creates variation because of which of the different sperm cells ______________ the egg cell. • The number of different gametes a human could produce is _____ or 8,388,608. That doesn’t include _________ _______. ...
... • ______ ___________also creates variation because of which of the different sperm cells ______________ the egg cell. • The number of different gametes a human could produce is _____ or 8,388,608. That doesn’t include _________ _______. ...
Chapter 1, section 3 – Experiments in Biology 1
... and functions (e.g. liver cell, brain cell, muscle cell, blood cell, etc.) ...
... and functions (e.g. liver cell, brain cell, muscle cell, blood cell, etc.) ...
Chromosomes and Cell Reproduction
... chromosomes in humans, contain genes that will determine the sex of the individual. ...
... chromosomes in humans, contain genes that will determine the sex of the individual. ...
![chapt16_lecture_edited [Compatibility Mode]](http://s1.studyres.com/store/data/000263591_1-cfed90f240fe045be4528c9a104d2a9a-300x300.png)
chapt16_lecture_edited [Compatibility Mode]
... homologue segregates into the other daughter nucleus. Each of the resulting haploid cells contains only one set of chromosomes. During the formation of haploid cells, the members of different chromosome pairs segregate independently of each other. ...
... homologue segregates into the other daughter nucleus. Each of the resulting haploid cells contains only one set of chromosomes. During the formation of haploid cells, the members of different chromosome pairs segregate independently of each other. ...
Section 14–1 Human Heredity (pages 341–348)
... 5. What does a pedigree chart show? It shows the relationships within a family. Match the labels to the parts of the pedigree chart shown below. Some of the parts of the pedigree chart may be used more than once. ...
... 5. What does a pedigree chart show? It shows the relationships within a family. Match the labels to the parts of the pedigree chart shown below. Some of the parts of the pedigree chart may be used more than once. ...
Mendelian Genetics part 4
... 3. The higher the rate; the farther apart they are from each other on the same chromosome. 4. The loci are measured in Centimorgans or map units. ...
... 3. The higher the rate; the farther apart they are from each other on the same chromosome. 4. The loci are measured in Centimorgans or map units. ...
無投影片標題 - MADANIA
... heterozygous individual (the genotype is Ee); and for a homozygous recessive person (the genotype is ee). 2. Performing a genetic cross is determining the genotypes of the parents and the genotype of the gametes. A heterozygous male and a heterozygous female to be crossed have the genotypes of Ee an ...
... heterozygous individual (the genotype is Ee); and for a homozygous recessive person (the genotype is ee). 2. Performing a genetic cross is determining the genotypes of the parents and the genotype of the gametes. A heterozygous male and a heterozygous female to be crossed have the genotypes of Ee an ...
Genetics 1
... rod like segments called chromosomes • Chromosomes occurs in pairs in every cell of our body except in the sperm and ovum. • Chromosomes numbers are the same for each specie. ...
... rod like segments called chromosomes • Chromosomes occurs in pairs in every cell of our body except in the sperm and ovum. • Chromosomes numbers are the same for each specie. ...
Mitosis Review: What Does it Start With? Cell division in eukaryotes
... H __ __ __ __ __ __ __ __ __ chromosomes are the same size and the same shape and carry genes for the same traits. C __ __ __ __ __ __ __ __ __ are log-like structures that appear near the nucleus during cell division in an animal cell and move to opposite poles to pull the chromosomes apart. When D ...
... H __ __ __ __ __ __ __ __ __ chromosomes are the same size and the same shape and carry genes for the same traits. C __ __ __ __ __ __ __ __ __ are log-like structures that appear near the nucleus during cell division in an animal cell and move to opposite poles to pull the chromosomes apart. When D ...
Chromosomes - s3.amazonaws.com
... Distribution of Chromosomes in gametes The gametes end up with only one set of chromosomes. It is random which chromosome of a pair goes into which gamete. SO, each gamete has a mixture of the mother & father’s chromosomes. This produces enormous gamete variability ...
... Distribution of Chromosomes in gametes The gametes end up with only one set of chromosomes. It is random which chromosome of a pair goes into which gamete. SO, each gamete has a mixture of the mother & father’s chromosomes. This produces enormous gamete variability ...
Period 5 1. In Trisomy X Syndrome, what is the abnormality? a. An
... 8. In what type of cell does cytokinesis happen by a groove forming and pinching off the cells from each other? a. Plant cell b. Animal cell c. All eukaryotes d. All prokaryotes 9. What is Turner syndrome? a) A syndrome where someone is missing a Y chromosome b) A syndrome where someone is missing a ...
... 8. In what type of cell does cytokinesis happen by a groove forming and pinching off the cells from each other? a. Plant cell b. Animal cell c. All eukaryotes d. All prokaryotes 9. What is Turner syndrome? a) A syndrome where someone is missing a Y chromosome b) A syndrome where someone is missing a ...
Cytogenetics
... it yields a series of lightly and darkly stained bands – the dark regions tend to be heterochromatic, late-replicating and AT rich. ...
... it yields a series of lightly and darkly stained bands – the dark regions tend to be heterochromatic, late-replicating and AT rich. ...
(lectures 24
... to an individual which also has a normal, uninverted chromosome, the individual is an inversion heterozygote (its chromosomes having two different gene orders – the individual genes may or may not be heterozygous). Heterozygotes for inversions form a loop at 1st division of meiosis. 4. Recall that j ...
... to an individual which also has a normal, uninverted chromosome, the individual is an inversion heterozygote (its chromosomes having two different gene orders – the individual genes may or may not be heterozygous). Heterozygotes for inversions form a loop at 1st division of meiosis. 4. Recall that j ...
second of three for Chapter 8
... its location on a chromosome (even though the gene itself is not changed), such a variation is called “position effect” ...
... its location on a chromosome (even though the gene itself is not changed), such a variation is called “position effect” ...
Chapter 15 practice Questions AP Biology
... B) All of the offspring have combinations of traits that match one of the two parents. C) The genes are located on sex chromosomes. D) Abnormal meiosis has occurred. E) Independent assortment is hindered. 2) A 0.1% frequency of recombination is observed A) only in sex chromosomes. B) only on genetic ...
... B) All of the offspring have combinations of traits that match one of the two parents. C) The genes are located on sex chromosomes. D) Abnormal meiosis has occurred. E) Independent assortment is hindered. 2) A 0.1% frequency of recombination is observed A) only in sex chromosomes. B) only on genetic ...
Meiosis II
... • Males have what chromosomes? • Where are genes located? • Are the homologous chromosomes exactly the same? • Are sister chromatids exactly the same? • What is an allele? ...
... • Males have what chromosomes? • Where are genes located? • Are the homologous chromosomes exactly the same? • Are sister chromatids exactly the same? • What is an allele? ...
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).