Preview Sample 1
... Answer: One-half of the offspring will be expected to have Down syndrome because of 2 X 1 segregation of chromosome #21 at anaphase I. 12) Normal diploid somatic (body) cells of the mosquito Culex pipiens contain six chromosomes. Assign the symbols AmAp, BmBp, and CmCp to the three homologous chromo ...
... Answer: One-half of the offspring will be expected to have Down syndrome because of 2 X 1 segregation of chromosome #21 at anaphase I. 12) Normal diploid somatic (body) cells of the mosquito Culex pipiens contain six chromosomes. Assign the symbols AmAp, BmBp, and CmCp to the three homologous chromo ...
DrMoran
... make up genes. Genes make different things for our body. They are packaged up into chromosomes Chromosomes are like a big recipe box for our bodies and DNA is the recipe! ...
... make up genes. Genes make different things for our body. They are packaged up into chromosomes Chromosomes are like a big recipe box for our bodies and DNA is the recipe! ...
X chromosome - Fort Bend ISD
... acid glutamic acid with the amino acid valine The ‘sickle shape’ of the cell causes it to form clots easily and the protein doesn’t allow the red blood ...
... acid glutamic acid with the amino acid valine The ‘sickle shape’ of the cell causes it to form clots easily and the protein doesn’t allow the red blood ...
Unit 5 Free Response
... particular gene of interest from one cell can be incorporated into a different cell. - Describe a procedure by which this can be done. - Explain the purpose of each step of your procedure. - Describe how you could determine whether the gene was successfully incorporated. - Describe an example of how ...
... particular gene of interest from one cell can be incorporated into a different cell. - Describe a procedure by which this can be done. - Explain the purpose of each step of your procedure. - Describe how you could determine whether the gene was successfully incorporated. - Describe an example of how ...
Meiosis - Campbell County Schools
... BREAK and each chromosome is pulled to opposite sides of the cell. • Nuclei reform and cytokenesis usually occurs (although it is often unequal). ...
... BREAK and each chromosome is pulled to opposite sides of the cell. • Nuclei reform and cytokenesis usually occurs (although it is often unequal). ...
mutations - Cloudfront.net
... an illness caused by one or more abnormalities in the genome, especially a condition that is present from birth. Conditions may or may not be inherited. Mutations occur all the time in every cell in the body. Each cell, however, has the remarkable ability to recognize mistakes and fix them b ...
... an illness caused by one or more abnormalities in the genome, especially a condition that is present from birth. Conditions may or may not be inherited. Mutations occur all the time in every cell in the body. Each cell, however, has the remarkable ability to recognize mistakes and fix them b ...
Hershey and Chase`s Experiment
... They adhere to the surface of the bacteria and inject their DNA into the bacteria. Their DNA codes for the assembly of more phages after their DNA is incorporated into the bacterial chromosome. Hershey and Chase Experiments ...
... They adhere to the surface of the bacteria and inject their DNA into the bacteria. Their DNA codes for the assembly of more phages after their DNA is incorporated into the bacterial chromosome. Hershey and Chase Experiments ...
Mutations and Genetic Disease There are more than 4,000 genetic
... There are more than 4,000 genetic diseases currently identified - most are very rare, but some are relatively widespread, especially within certain ethnic groups. In addition, genetic predispositions toward conditions such as high cholesterol, heart disease, and cancer have been found. Most genetic ...
... There are more than 4,000 genetic diseases currently identified - most are very rare, but some are relatively widespread, especially within certain ethnic groups. In addition, genetic predispositions toward conditions such as high cholesterol, heart disease, and cancer have been found. Most genetic ...
Document
... Even-numbered polyploids are more likely to be fertile because of potential for equal segregation during meiosis. Odd-numbered polyploids have unpaired chromosomes and usually are sterile. Most seedless fruits are triploid. ...
... Even-numbered polyploids are more likely to be fertile because of potential for equal segregation during meiosis. Odd-numbered polyploids have unpaired chromosomes and usually are sterile. Most seedless fruits are triploid. ...
Bacteria Notes File
... a) Donating E. coli extends external appendage called a sex pili. b) Sex pili attached to a DNA-receiving cell c) A cytoplasmic bridge forms through which DNA transfer occurs ...
... a) Donating E. coli extends external appendage called a sex pili. b) Sex pili attached to a DNA-receiving cell c) A cytoplasmic bridge forms through which DNA transfer occurs ...
Genetics Since Mendel
... • A group of gene pairs acts together to produce a trait, which creates more variety in phenotypes. • Many human traits are controlled by polygenic inheritance, such as hair and eye color, height, body build, shape of eyes, lips and ears. ...
... • A group of gene pairs acts together to produce a trait, which creates more variety in phenotypes. • Many human traits are controlled by polygenic inheritance, such as hair and eye color, height, body build, shape of eyes, lips and ears. ...
Misconceptions relating to DNA and RNA
... Genes are traits A gene and the expression of the gene as a characteristic or trait are the same thing There are some types of organisms that do not have DNA Only animals have DNA, plants and mushrooms do not have DNA Each DNA molecule is made of more than one chromosome The different cell types fou ...
... Genes are traits A gene and the expression of the gene as a characteristic or trait are the same thing There are some types of organisms that do not have DNA Only animals have DNA, plants and mushrooms do not have DNA Each DNA molecule is made of more than one chromosome The different cell types fou ...
Relating Mendelism to Chromosomes
... 2. Explain why sex-linked diseases are more common in human males. 3. Describe the inheritance patterns and symptoms of color blindness, Duchenne muscular dystrophy, and hemophilia. 15.3 Linked Genes 4. Distinguish between linked genes and sex-linked genes. 5. Explain why linked genes do not assort ...
... 2. Explain why sex-linked diseases are more common in human males. 3. Describe the inheritance patterns and symptoms of color blindness, Duchenne muscular dystrophy, and hemophilia. 15.3 Linked Genes 4. Distinguish between linked genes and sex-linked genes. 5. Explain why linked genes do not assort ...
Sex Determination and Sex Chromosomes
... Sex Determination and Sex Chromosomes Sex determination In mammals, females have two similar sex-determining chromosomes; males have two dissimilar ones In some other organisms, this general scheme is reversed Some oddities In some organisms, an individual can start out life as one sex and c ...
... Sex Determination and Sex Chromosomes Sex determination In mammals, females have two similar sex-determining chromosomes; males have two dissimilar ones In some other organisms, this general scheme is reversed Some oddities In some organisms, an individual can start out life as one sex and c ...
p. 85 Genetic Disorders
... produces abnormally thick mucus in the lungs and intestines -caused by a recessive allele with mutations ...
... produces abnormally thick mucus in the lungs and intestines -caused by a recessive allele with mutations ...
Learning Target #1: Know vocabulary that builds the
... 22. Cells are constantly dividing, producing more cells. Why does an organism need more cells? a. To allow the organism to grow. b. To replace dead cells c. Both A and B 23. The following process precedes (comes before) both mitosis and meiosis, and ensures that the resulting cells are identical. a. ...
... 22. Cells are constantly dividing, producing more cells. Why does an organism need more cells? a. To allow the organism to grow. b. To replace dead cells c. Both A and B 23. The following process precedes (comes before) both mitosis and meiosis, and ensures that the resulting cells are identical. a. ...
dragon genetics lab - Aurora Public Schools
... Your instructor does not care which partner worked the hardest. The lab must be completed on time. 2. Each partner must pick up five Popsicle sticks -- one of each color of autosome, and one sex chromosome stick. Each side of a stick represents a chromosome, and the two sides together represent a pa ...
... Your instructor does not care which partner worked the hardest. The lab must be completed on time. 2. Each partner must pick up five Popsicle sticks -- one of each color of autosome, and one sex chromosome stick. Each side of a stick represents a chromosome, and the two sides together represent a pa ...
chromosome Y
... typical for genes fully connected with sex noticeable difference in the frequency of illnesses between the sex > much more common by the individuals of type XY than XX genes localized on heterologous part of chromosomes Y do not have their pair allele in genotypes XY, the organism hemizygotic for th ...
... typical for genes fully connected with sex noticeable difference in the frequency of illnesses between the sex > much more common by the individuals of type XY than XX genes localized on heterologous part of chromosomes Y do not have their pair allele in genotypes XY, the organism hemizygotic for th ...
ANSWERS TO REVIEW QUESTIONS
... c. A female with trisomy 21 Down syndrome. Phenotype includes short, sparse, straight hair, wide-set eyes with epicanthal folds, a broad nose, protruding tongue, mental retardation, and increased risk of a heart defect, suppressed immunity, and leukemia. 8. Basketball players may have an extra Y chr ...
... c. A female with trisomy 21 Down syndrome. Phenotype includes short, sparse, straight hair, wide-set eyes with epicanthal folds, a broad nose, protruding tongue, mental retardation, and increased risk of a heart defect, suppressed immunity, and leukemia. 8. Basketball players may have an extra Y chr ...
Sex-linked Traits - Perry Local Schools
... • Can still have dominant and recessive alleles • Some traits occur more often in one sex than the other ...
... • Can still have dominant and recessive alleles • Some traits occur more often in one sex than the other ...
BIOL 1406-61313 CHAPTER 14 AND 15 Dr
... All aneuploid individuals die before birth. It can be represented by 4n. It involves only the autosomes. 7. If a fragment of a chromosome breaks off and then reattaches to the original chromosome at the same place but in the reverse direction, the resulting chromosomal abnormality is called _____. a ...
... All aneuploid individuals die before birth. It can be represented by 4n. It involves only the autosomes. 7. If a fragment of a chromosome breaks off and then reattaches to the original chromosome at the same place but in the reverse direction, the resulting chromosomal abnormality is called _____. a ...
Indicate the answer choice that best completes the
... 29. If cancer is present, what is the likely explanation for what happened to the cells depicted in the curves labeled B and D in Figure 9-2? a. They thrived with the cancerous cells. b. They were harmed by radiation therapy. c. They died off due to natural causes. d. They died off because th ...
... 29. If cancer is present, what is the likely explanation for what happened to the cells depicted in the curves labeled B and D in Figure 9-2? a. They thrived with the cancerous cells. b. They were harmed by radiation therapy. c. They died off due to natural causes. d. They died off because th ...
Human Inheritance
... Human Chromosomes Humans: male & female, 2n 23 pairs of homologous chromosomes in cells Each pair is structurally identical except sex chromosomes (Female XX, male XY) ...
... Human Chromosomes Humans: male & female, 2n 23 pairs of homologous chromosomes in cells Each pair is structurally identical except sex chromosomes (Female XX, male XY) ...
Chromosome
A chromosome (chromo- + -some) is a packaged and organized structure containing most of the DNA of a living organism. It is not usually found on its own, but rather is complexed with many structural proteins called histones as well as associated transcription (copying of genetic sequences) factors and several other macromolecules. Two ""sister"" chromatids (half a chromosome) join together at a protein junction called a centromere. Chromosomes are normally visible under a light microscope only when the cell is undergoing mitosis. Even then, the full chromosome containing both joined sister chromatids becomes visible only during a sequence of mitosis known as metaphase (when chromosomes align together, attached to the mitotic spindle and prepare to divide). This DNA and its associated proteins and macromolecules is collectively known as chromatin, which is further packaged along with its associated molecules into a discrete structure called a nucleosome. Chromatin is present in most cells, with a few exceptions - erythrocytes for example. Occurring only in the nucleus of eukaryotic cells, chromatin composes the vast majority of all DNA, except for a small amount inherited maternally which is found in mitochondria. In prokaryotic cells, chromatin occurs free-floating in cytoplasm, as these cells lack organelles and a defined nucleus. The main information-carrying macromolecule is a single piece of coiled double-stranded DNA, containing many genes, regulatory elements and other noncoding DNA. The DNA-bound macromolecules are proteins, which serve to package the DNA and control its functions. Chromosomes vary widely between different organisms. Some species such as certain bacteria also contain plasmids or other extrachromosomal DNA. These are circular structures in the cytoplasm which contain cellular DNA and play a role in horizontal gene transfer.Compaction of the duplicated chromosomes during cell division (mitosis or meiosis) results either in a four-arm structure (pictured to the right) if the centromere is located in the middle of the chromosome or a two-arm structure if the centromere is located near one of the ends. Chromosomal recombination during meiosis and subsequent sexual reproduction plays a vital role in genetic diversity. If these structures are manipulated incorrectly, through processes known as chromosomal instability and translocation, the cell may undergo mitotic catastrophe and die, or it may unexpectedly evade apoptosis leading to the progression of cancer.In prokaryotes (see nucleoids) and viruses, the DNA is often densely packed and organized. In the case of archaea by homologs to eukaryotic histones, in the case of bacteria by histone-like proteins. Small circular genomes called plasmids are often found in bacteria and also in mitochondria and chloroplasts, reflecting their bacterial origins.