Download Genetics Review Sheet - Harrison High School

Genetics Review Sheet
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What is the symbol for haploid?
What is the symbol for diploid?
If the haploid number of a rat’s chromosomes is 11, what would the diploid number be?
What is the symbol for male?
What is the normal male’s genotype?
What is the symbol for female?
What is the normal female’s genotype?
The gene or letter combination is called a _____?
A physical appearance or description is called a _____?
What is the genotype for an organism that is heterozygous? (Use any letter.)
A visible, observable trait is a _____ trait.
A hidden trait is a _____ trait.
Select the word that does not belong: heterozygous, homozygous, hybrid.
Select the word that does not belong: homozygous, heterozygous, pure.
What type of inheritance pattern produces equal expression of the genes?
Roan cattle or checkered chickens are examples of what type of dominance?
What type of inheritance pattern produces a blend of two traits?
Which pair of chromosomes are known as the sex chromosomes?
What type of traits are controlled by genes locate on the X sex chromosome?
The 22 pair of chromosomes that are NOT sex chromosomes are called _____?
A variation of a gene is called an _____.
What sex linked genetic disorder causes sickle shaped red blood cells?
What sex linked genetic disorder causes blood clotting problems?
What genetic disorder is caused by an extra 21st chromosome? What type of mutation causes this?
List the genotypes in the correct order for sex linked problems.
What is the abbreviation for the parent generation?
Where is the parent generation placed on the punnet square?
What is the abbreviation for the offspring generation?
Where are the offspring found in the punnet square?
What scientist conducted the first studies in heredity and is also known as the father of genetics?
What is the diploid number of chromosomes in humans?
What is a fertilized egg called?
Where are sperm made in the human body?
Where are eggs made in the human body?
Are our body cells haploid or diploid?
A cross of one trait.
The study of inheritance
A cross of two traits
How many different blood type combinations are there?
List the genotypes of all the blood types using the I notation.
41. What phenotypic ratio results when you cross two heterozygous parents in a dihybrid?
42. When do most mutations occur?
43. What are the differences between an inversion, translocation, deletion, duplication,?
44. How does a nondisjunction cause a genetic abnormality?
45. Name 2 examples of a nondisjunction.
46. What chromosomes are the sex chromosomes in humans?
47. What is the difference between a monosomy and a trisomy?
48. What is a pedigree used for?
49. List and describe two types of prenatal testing that is done to detect a genetic disorder.
50. How many numbers are in the genotypic and phenotypic ratios of a sex linked cross?
You must know how to work all types of genetics problems: Monohybrid, Dihybrid, Codominance
(Including blood types), Incomplete Dominance, Sex linked and how to read a pedigree.
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n
2n
2n = 22
XY
XX
Genotype
Phenotype
Aa (One capital letter and one lower case letter)
Dominant
Recessive
Homozygous
Heterozygous
Codominance
Codominance
Incomplete dominance
23rd pair
sex-linked
body cell chromosomes
Allele
Sickle cell anemia
Hemophilia
Down’s syndrome
XX, X’X, X’X’, XY, X’Y
P
Outside the punnett square, above the columns and beside the rows.
F1
Inside the punnett squares
Gregor Mendel
46
Zygote
Testes of males
Ovaries of females
Diploid
Monohybrid Cross
Genetics
Dihybrid Cross
Six
IA IA , IA i ,IB IB ,IB i , IA IB , ii
9:3:3:1
During meiosis
See your notes
The wrong number of chromosomes are in each of the four haploid cells formed at the end of meiosis.
Monosomy and Trisomy
23rd pair
The cells have one missing chromosome in a monosomy and an extra chromosome in a trisomy.
Pedigrees are used to trace the inheritance of a genetic trait in a family.
Chorionic Villi Testing and Amniocentesis (Look at your notes for the details of each)
5 numbers in the genotypic ratio and 4 numbers in the phenotypic ratio (carrier and normal females both look
normal so you put them together in the phenotypic ratio).