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Biology Genetics

Test Review

QuestionAnswer
The study of how traits are passed from parents to offspring Genetics
Different genes for the same traits are called Alles
Genes contain instructions for making Chromosome
What is used to predict the possible gene makeup of offspring? Punnet Square
Chromosomes are pieces of what kind of Material? Dna
What does homozygous mean? Both gene of a pair
A sex-linked trait is located on the chromosome? X chromosome
A Sex linked trait is missing what type of chromosome? Y chromosome
Give the genotype of a hybrid animal: ____________ Aa
Give the genotype of a homozygous spotted coat dog AA
Give the genotype of a solid coat dog aa
Give the phenotype of an animal with 2 dominant genes AA
Give the phenotype of an animal with 2 recessive genes aa
Give the phenotype with 1 dominant and 1 recessive gene Aa
Aa
For a child to show a recessive trait such as blue eyes, the child must have what genes? Bb
Each parent of the child must have what gene in them for the child to have blue eyes? _____________ bb
A man with blue eyes, whose mother had brown eyes and father had blue eyes, marries a woman with brown eyes, whose father had blue eyes. What is the man’s with blue eyes genotype? bb
A man with blue eyes, whose mother had brown eyes and father had blue eyes, marries a woman with brown eyes, whose father had blue eyes.What is the woman’s with Brown eyes genotype? Bb
A man with blue eyes, whose mother had brown eyes and father had blue eyes, marries a woman with brown eyes, whose father had blue eyes.What is the genotype of the man’s with blue eye's father? Bb
A man with blue eyes, whose mother had brown eyes and father had blue eyes, marries a woman with brown eyes, whose father had blue eyes.What is the genotype of the woman’s blue eyed father? bb
If the man and woman have 4 children, how many would be expected to be heterozygous for eye color? 50% Bb heterozygaus
How many of the children would be expected to have blue eyes? ____________ 50% bb homozygaus
When RR is a red flower, WW is a white flower, and RW is a pink flower, this is an example of what type of inheritance? Incomplete dominance
A sudden genetic change is called a Mutation
What are the two types of mutations? Chromosmal and Gene Point
What is the most common type of mutation and usually is the least drastic? Gene Point
What is the least common type of mutation and usually the most drastic? Chromosomal
What is identical in every cell of an organism? DNA What is different is which genes are expressed in the cells
Two black labs produce a litter of four puppies. Three are black and one is yellow. The yellow coat is probably what type of trait (dominant or recessive)? Recessive
If a sex cell of an organism contains a mutation will the mutation be passed to the offspring? Yes
If a couple wants a boy, what letter (chromosome) must the dad donate in his sperm cell? Y
Created by: spotsville2