Mendelian Genetics
... Purple pigment purple flower) Recessive allele = can be hidden/not expressed (ex. No pigment white flower) ...
... Purple pigment purple flower) Recessive allele = can be hidden/not expressed (ex. No pigment white flower) ...
Genetic Notes
... (red-eyed male) X (white-eyed female) • Remember: the Y chromosome in males does not carry traits. RR = red eyed Rr = red eyed rr = white eyed ...
... (red-eyed male) X (white-eyed female) • Remember: the Y chromosome in males does not carry traits. RR = red eyed Rr = red eyed rr = white eyed ...
Name: Chapter 11: Introduction to Genetics Exam Matching: Match
... 9. Which of the following would have a different phenotype from the others? A. rR B. rr C. RR D. Rr ...
... 9. Which of the following would have a different phenotype from the others? A. rR B. rr C. RR D. Rr ...
Introduction to Genetics Study Guide
... Principle of segregation separation of alleles during gamete formation; organisms inherit two copies of each gene and donate one copy to each of their offspring Principle of independent assortment independent segregation of genes during the formation of gametes. Explains genetic variation within spe ...
... Principle of segregation separation of alleles during gamete formation; organisms inherit two copies of each gene and donate one copy to each of their offspring Principle of independent assortment independent segregation of genes during the formation of gametes. Explains genetic variation within spe ...
Extension of Mendelian Genetics
... exhibits a phenotype that is intermediate between the corresponding homozygotes • Example: – Four o’clock (Mirabilis jalapa) flower color plant – Two alleles • CR = wild-type allele for red flower color • CW = allele for white flower color ...
... exhibits a phenotype that is intermediate between the corresponding homozygotes • Example: – Four o’clock (Mirabilis jalapa) flower color plant – Two alleles • CR = wild-type allele for red flower color • CW = allele for white flower color ...
Name
... 30. A person who has one recessive allele and one dominant allele for a trait is called a ______________. 31. Characteristics are affected by the interactions between genes and the _________________________. 32. A ______________________ is the offspring of parents that have different alleles for a t ...
... 30. A person who has one recessive allele and one dominant allele for a trait is called a ______________. 31. Characteristics are affected by the interactions between genes and the _________________________. 32. A ______________________ is the offspring of parents that have different alleles for a t ...
Punnett PP
... number one on top of the two squares Step 3: put the possible alleles from parent number 2 on the left Step 4: Write the alleles at top down the column, and the alleles at left across the row ...
... number one on top of the two squares Step 3: put the possible alleles from parent number 2 on the left Step 4: Write the alleles at top down the column, and the alleles at left across the row ...
Chapter 12 Study Guide: Mendel and Heredity Section 1 – Origins of
... no dominant allele on the Y sex chromosome to “mask” the recessive allele. 6. Two sex-linked genetic disorders in humans are: a. __________________________- genetic disorder in which a person cannot distinguish between 2 colors such as red and green. b. Hemophilia – genetic disorder in which a perso ...
... no dominant allele on the Y sex chromosome to “mask” the recessive allele. 6. Two sex-linked genetic disorders in humans are: a. __________________________- genetic disorder in which a person cannot distinguish between 2 colors such as red and green. b. Hemophilia – genetic disorder in which a perso ...
Genetics Study Guide 2/08
... 6. Sex-linked traits that are controlled by recessive alleles are more likely to show up in males. _________________________ ...
... 6. Sex-linked traits that are controlled by recessive alleles are more likely to show up in males. _________________________ ...
Heredity
... Trait – a characteristic that a parent can pass on to its offspring through its genes Genetics – the scientific study of heredity Gregor Mendel – a priest who, from 1856 to 1863, studied the characteristics of 28 000 pea plants and founded the science of genetics Mendel started with two purebred pla ...
... Trait – a characteristic that a parent can pass on to its offspring through its genes Genetics – the scientific study of heredity Gregor Mendel – a priest who, from 1856 to 1863, studied the characteristics of 28 000 pea plants and founded the science of genetics Mendel started with two purebred pla ...
Chapter 9 Patterns of Inheritance
... see if the separation of one pair of alleles affects the separation of another pair of alleles. Instead of crossing a yellow seed with a green seed; he observed seed color and seed shape together Seeds that are round (R) and yellow (Y) are ...
... see if the separation of one pair of alleles affects the separation of another pair of alleles. Instead of crossing a yellow seed with a green seed; he observed seed color and seed shape together Seeds that are round (R) and yellow (Y) are ...
Sex-Influenced Traits
... Sex-influenced traits appear more often in one sex than the other. Although these traits may appear more often in males than in females, they are not sex-linked, because they do not appear on the sex chromosomes. The genes for sex-influenced traits are on the autosomes not the sex chromosomes. Sex-i ...
... Sex-influenced traits appear more often in one sex than the other. Although these traits may appear more often in males than in females, they are not sex-linked, because they do not appear on the sex chromosomes. The genes for sex-influenced traits are on the autosomes not the sex chromosomes. Sex-i ...
Study Questions – Chapter 1
... 7. What is the difference between genotype and phenotype, and how are they related? 8. How many alleles of a gene come from each parent, and how many are passed along to the offspring? 9. Define the term allele. 10. What is a dominant allele? 11. What is a recessive allele? 12. What are the modes of ...
... 7. What is the difference between genotype and phenotype, and how are they related? 8. How many alleles of a gene come from each parent, and how many are passed along to the offspring? 9. Define the term allele. 10. What is a dominant allele? 11. What is a recessive allele? 12. What are the modes of ...
Evolutionary Genetics Cheat Sheet
... o There are now two pairs of each chromosome. When the cell replicates/divides, each new cell receives a full set of chromosome pairs. MEIOSIS The process of producing gametes (sex cells, which are called ova in females and sperm in males) o Each gamete has only one member of each chromosome pair ...
... o There are now two pairs of each chromosome. When the cell replicates/divides, each new cell receives a full set of chromosome pairs. MEIOSIS The process of producing gametes (sex cells, which are called ova in females and sperm in males) o Each gamete has only one member of each chromosome pair ...
Classical (Mendelian) Genetics
... donating alleles for 2 traits, each parent in the f1 generation can give 4 possible combination of alleles. TW, Tw, tW, or tw. The cross should look like this. (The mathematical “foil” method can often be used here) ...
... donating alleles for 2 traits, each parent in the f1 generation can give 4 possible combination of alleles. TW, Tw, tW, or tw. The cross should look like this. (The mathematical “foil” method can often be used here) ...
2 Sex chromosomes
... Y-linked Genes –caused by gene found on Y chromosome that is not homologous with X chromosome (called holandric gene) Not many holandric genes Is it possible for a female to inherit a holandric trait? ...
... Y-linked Genes –caused by gene found on Y chromosome that is not homologous with X chromosome (called holandric gene) Not many holandric genes Is it possible for a female to inherit a holandric trait? ...
Mendelian Genetics Blending theory of heredity
... Fetal testing: amniocentesis and chorionic villus sampling Amniocentesis extracts 10cc amniotic fluid; presence of chemical in fluid indicate some genetic disorders, some test are done on cells grown in culture from fetal cells which are karyotyped to id ...
... Fetal testing: amniocentesis and chorionic villus sampling Amniocentesis extracts 10cc amniotic fluid; presence of chemical in fluid indicate some genetic disorders, some test are done on cells grown in culture from fetal cells which are karyotyped to id ...
Chapter 11 Notes – Fill In
... Homozygous=organisms that have two ___________alleles for a gene (BB or bb) Heterozygous=organisms that have two ______________ alleles for a gene (Bb) Phenotype = the _________________________________________ of an organism ...
... Homozygous=organisms that have two ___________alleles for a gene (BB or bb) Heterozygous=organisms that have two ______________ alleles for a gene (Bb) Phenotype = the _________________________________________ of an organism ...
DNA Function - Grayslake Central High School
... what offspring will result from two parents. 1. Determine parent genotypes. 2. Determine possible gametes. 3. Use a Punnett square to show possible gamete combinations. 4. List possible offspring genotypes. 5. List possible offspring phenotypes. ...
... what offspring will result from two parents. 1. Determine parent genotypes. 2. Determine possible gametes. 3. Use a Punnett square to show possible gamete combinations. 4. List possible offspring genotypes. 5. List possible offspring phenotypes. ...
Genetics and Heredity
... Heredity and Genetics • Heredity – passing of traits from parents to offspring. • Genetics – the study of how traits are passed from parent to ...
... Heredity and Genetics • Heredity – passing of traits from parents to offspring. • Genetics – the study of how traits are passed from parent to ...
Dominance (genetics)
Dominance in genetics is a relationship between alleles of one gene, in which the effect on phenotype of one allele masks the contribution of a second allele at the same locus. The first allele is dominant and the second allele is recessive. For genes on an autosome (any chromosome other than a sex chromosome), the alleles and their associated traits are autosomal dominant or autosomal recessive. Dominance is a key concept in Mendelian inheritance and classical genetics. Often the dominant allele codes for a functional protein whereas the recessive allele does not.A classic example of dominance is the inheritance of seed shape, for example a pea shape in peas. Peas may be round, associated with allele R or wrinkled, associated with allele r. In this case, three combinations of alleles (genotypes) are possible: RR, Rr, and rr. The RR individuals have round peas and the rr individuals have wrinkled peas. In Rr individuals the R allele masks the presence of the r allele, so these individuals also have round peas. Thus, allele R is dominant to allele r, and allele r is recessive to allele R. This use of upper case letters for dominant alleles and lower caseones for recessive alleles is a widely followed convention.More generally, where a gene exists in two allelic versions (designated A and a), three combinations of alleles are possible: AA, Aa, and aa. If AA and aa individuals (homozygotes) show different forms of some trait (phenotypes), and Aa individuals (heterozygotes) show the same phenotype as AA individuals, then allele A is said to dominate or be dominant to or show dominance to allele a, and a is said to be recessive to A.Dominance is not inherent to an allele. It is a relationship between alleles; one allele can be dominant over a second allele, recessive to a third allele, and codominant to a fourth. Also, an allele may be dominant for a particular aspect of phenotype but not for other aspects influenced by the same gene. Dominance differs from epistasis, a relationship in which an allele of one gene affects the expression of another allele at a different gene.