The Nucleus, Chromosomes and Genes
... Effects of mutation A) If the mutation is in a normal body cell Cell death or a change in its functioning. In the worst cases the change in function leads to cancer. This is when a cell start to undergo uncontrollable division to create a tumour. B) If the mutation is in a sperm or egg cell All the ...
... Effects of mutation A) If the mutation is in a normal body cell Cell death or a change in its functioning. In the worst cases the change in function leads to cancer. This is when a cell start to undergo uncontrollable division to create a tumour. B) If the mutation is in a sperm or egg cell All the ...
chapter 6 vocabulary card sort
... chromosomes not directly involved in determining the sex (gender) of an individual ...
... chromosomes not directly involved in determining the sex (gender) of an individual ...
CELL DIVISION
... Deletion - occurs when a chromosome segment breaks off, resulting in the loss of some genes Duplication – occurs when part of a chromosome is repeated ...
... Deletion - occurs when a chromosome segment breaks off, resulting in the loss of some genes Duplication – occurs when part of a chromosome is repeated ...
X chromosome inactivation- Review
... X chromosome inactivation • Introduction X-chromosome inactivation occurs at day 3 of embyrogenesis Inactivation process is random Inactivation state maintained throughout life • A few genes remain active in the inactive X chromosome, including XIST at Xq13 ...
... X chromosome inactivation • Introduction X-chromosome inactivation occurs at day 3 of embyrogenesis Inactivation process is random Inactivation state maintained throughout life • A few genes remain active in the inactive X chromosome, including XIST at Xq13 ...
What is a Karyotype?
... Found in females that do not have the normal XX in their cells. They only have one. 1 in 2000 live births. Symptoms: swollen hands and feet, lack female features after puberty, wide, webbed neck, flat/broad chest, drooping eyes, infertility. ...
... Found in females that do not have the normal XX in their cells. They only have one. 1 in 2000 live births. Symptoms: swollen hands and feet, lack female features after puberty, wide, webbed neck, flat/broad chest, drooping eyes, infertility. ...
Concept Check Questions
... 2. Neither Tim nor Rhoda has Duchenne muscular dystrophy, but their firstborn son does have it. What is the probability that a second child of this couple will have the disease? ...
... 2. Neither Tim nor Rhoda has Duchenne muscular dystrophy, but their firstborn son does have it. What is the probability that a second child of this couple will have the disease? ...
X n Y
... *The gene is NOT on a sex chromosome, but SEX affects the phenotype *Example-baldnessdominant in males, recessive in women *If ‘B’ represents bald and ‘b’ is hairy then Men must be bb to keep hair Women can be Bb or BB to keep hair ...
... *The gene is NOT on a sex chromosome, but SEX affects the phenotype *Example-baldnessdominant in males, recessive in women *If ‘B’ represents bald and ‘b’ is hairy then Men must be bb to keep hair Women can be Bb or BB to keep hair ...
Civics – Unit 1 Jeopardy - Frontenac Secondary School
... individual of unknown genotype with a homozygous recessive individual ...
... individual of unknown genotype with a homozygous recessive individual ...
Cell cycle reading guide
... 9. Write down a four step (1 sentence per step) procedure for doing cell culture to test whether a specific growth factor would affect fibroblasts. ...
... 9. Write down a four step (1 sentence per step) procedure for doing cell culture to test whether a specific growth factor would affect fibroblasts. ...
Q $100 Q $200 Q $300 Q $400 Q $500 Q $100 Q $100 Q $100 Q
... What do we call the mathematical chance that an event will occur? ...
... What do we call the mathematical chance that an event will occur? ...
Methyl CpG binding protein 2 binding sites on chromosome 22 in
... Methyl CpG binding protein 2 binding sites on chromosome 22 in hepatocellular carcinoma B cells ...
... Methyl CpG binding protein 2 binding sites on chromosome 22 in hepatocellular carcinoma B cells ...
Chapter 27: Human Genetics Vocabulary
... A The genes that control our traits are found on chromosomes B Chromosome number 1 Each human sex cell has 23 chromosomes 2 Each human body cell has 46 chromosomes in 23 pairs 3 Different organisms have different chromosome numbers C Amniocentesis is a way to study the chromosomes of a fet ...
... A The genes that control our traits are found on chromosomes B Chromosome number 1 Each human sex cell has 23 chromosomes 2 Each human body cell has 46 chromosomes in 23 pairs 3 Different organisms have different chromosome numbers C Amniocentesis is a way to study the chromosomes of a fet ...
Gene linkage ppt
... Linked genes are pairs or groups of genes which are inherited together, carried on the same chromosome (usually close together) ...
... Linked genes are pairs or groups of genes which are inherited together, carried on the same chromosome (usually close together) ...
Chapter 15~ The Chromosomal Basis of Inheritance ______
... – Duchenne muscular dystropy (MD) – hemophilia X-inactivation: 2nd X chromosome in females condenses into a Barr body ...
... – Duchenne muscular dystropy (MD) – hemophilia X-inactivation: 2nd X chromosome in females condenses into a Barr body ...
Genes and Inheritance
... • The study of chromosome structure is called cytogenetics • Long strands of DNA with many genes (20-30 thousand) • Diploid organisms have two copies of each chromosomes ...
... • The study of chromosome structure is called cytogenetics • Long strands of DNA with many genes (20-30 thousand) • Diploid organisms have two copies of each chromosomes ...
ANSWER KEY FOR PROBLEM SET #2
... gene/locus for coat color in cats is on the X chromosome, male cats have only one coat color gene and thus are one solid color. Since female cats have two X chromosomes they can be heterozygous for coat color. Depending on which X is active in a given cell (the other X being an inactive Barr body) c ...
... gene/locus for coat color in cats is on the X chromosome, male cats have only one coat color gene and thus are one solid color. Since female cats have two X chromosomes they can be heterozygous for coat color. Depending on which X is active in a given cell (the other X being an inactive Barr body) c ...
Chromosomal Polymorphism
... XX females “compensate” by inactivating one of their X chromosomes to make a single “dosage” of X-linked genes. ...
... XX females “compensate” by inactivating one of their X chromosomes to make a single “dosage” of X-linked genes. ...
2-HumanGen SexLinked
... • A female who is heterozygous for this gene has patches of orange and either brown or black forming a tortoiseshell pattern that reflects different cells expressing the two different alleles. ...
... • A female who is heterozygous for this gene has patches of orange and either brown or black forming a tortoiseshell pattern that reflects different cells expressing the two different alleles. ...
11.3 Notes
... Muscular dystrophy is an inherited disease that results with the progressive wasting away of ______________________________________ ...
... Muscular dystrophy is an inherited disease that results with the progressive wasting away of ______________________________________ ...
3. fused spleen and tumor cells.
... 1. Having two identical allelic genes on two corresponding positions of a pair of chromosomes. 3. fused spleen and tumor cells. 5. The existence of more than one form of a genetic trait. 8. An enzyme found in high concentrations in semen. 9. The liquid that separates from the blood when a clot is fo ...
... 1. Having two identical allelic genes on two corresponding positions of a pair of chromosomes. 3. fused spleen and tumor cells. 5. The existence of more than one form of a genetic trait. 8. An enzyme found in high concentrations in semen. 9. The liquid that separates from the blood when a clot is fo ...
Until now our analysis of genes has focused on gene function as
... mapping point mutations at the resolution of single nucleotide pairs. We’ve taken it for granted that genes reside on chromosomes, but how do we know this?Let’s review the properties of gene segregation.Consider two different traits. ...
... mapping point mutations at the resolution of single nucleotide pairs. We’ve taken it for granted that genes reside on chromosomes, but how do we know this?Let’s review the properties of gene segregation.Consider two different traits. ...
X-inactivation
X-inactivation (also called lyonization) is a process by which one of the two copies of the X chromosome present in female mammals is inactivated. The inactive X chromosome is silenced by its being packaged in such a way that it has a transcriptionally inactive structure called heterochromatin. As nearly all female mammals have two X chromosomes, X-inactivation prevents them from having twice as many X chromosome gene products as males, who only possess a single copy of the X chromosome (see dosage compensation). The choice of which X chromosome will be inactivated is random in placental mammals such as humans, but once an X chromosome is inactivated it will remain inactive throughout the lifetime of the cell and its descendants in the organism. Unlike the random X-inactivation in placental mammals, inactivation in marsupials applies exclusively to the paternally derived X chromosome.