WorksheetsGenetics
Total questions: 73
Worksheet time: 58mins
The genetic makeup of an individual (or DNA) is called a (a)
An observed or measurable characteristic of an individual is a (a)
An observed category or a measured level of performance for a specific trait is a (a)
A phenotype is not a trait
true
false
(a) are the product of genes and the environment
A group of animals within the same species that have a common origin and similar identifying characteristics
(a)
the process that determines which individuals become parents, how many offspring they produce, and how long they remain in the breeding population.
(a)
the process that determines which selected males are bred to which selected females
(a)
Nucleotides make up
(a)
basic physical unit of heredity
(a)
a long strand of DNA and associated proteins present in the nucleus of every cell
(a)
type of protein found in chromosomes
(a)
the site of a particular gene
(a)
What’s on chromosomes?
(a)
An alternate form of a gene
(a)
there can be more than 2 alleles
true
false
(a) more allele combinations
genes assort independently during meiosis and all possible gametes form in equal proportions
(a)
bonds that hold the nucleotides
(a)
hydrogen bonds are weak bonds that hold nucleotides together
true
false
the law of independent assortment is broken a lot
true
false
DNA stand for
(a)
Each chromosome comes as a pair
true
false
the occurrence of two or more loci of interest on the same chromosome
(a)
crossing over results in
(a)
the formation of a new combination of genes on a chromosome as a result of crossing over
(a)
Sperm cell + egg cell =
(a)
A zygote has a full complement of genes
true
false
We call the organism in early development the (a)
Not every gamete forms a zygote
true
false
the process that determines which egg matures and which sperm succeeds in fertilizing the egg
(a)
Not all gametes are viable, and they are selected out
false
A two dimensional chart used to determine possible zygote outcomes from a mating
(a)
If a gene is simply inherited, you can estimate the number of each offspring
true
false
Inheritance is (mostly) random
true
false
We cannot prevent the randomness of genetic inheritance from occurring
true
false
when, in heterozygotes, one allele has more effect than the other
dominance
complete dominance
partial dominance
a form of dominance in which the expression of the heterozygote is identical to the expression of the homozygous dominant genotype
dominance
complete dominance
partial dominance
when, in heterozygotes, expression of the genotypes is intermediate or resembles the homozygous dominant genotype
dominance
complete dominance
partial dominance
Genes at difference loci can interact
(a)
When expression of genes differs between males and female
(a)
2 chromatids make up 1 chromosome
true
false
interactions in the system are essential
true
false
(a) are affected by only one or few genes
Simply inherited traits are almost never affected by the environment
true
false
-Affected by many different genes.
-No one gene has an overriding influence
(a)
Polygenic traits are affected by the environment
true
false
qualitiative
interpretation based
simply inherited
polygenic
quantitative
measurable
simply inherited
polygenic
Polygenic traits can look like simply-inherited traits sometimes
true
false
We call polygenic traits that LOOK like simply-inherited traits ______ _________
(a)
what is more important polygenic or simply inherited?
simply inherited
polygenic
A mating designed to reveal the genotype of an individual for few loci
(a)
what is the difference in simply inherited and polygenic traits?
(a)
We can use a test mating to identify genes associated with polygenic traits
true
false
a polygenic trait that has qualitative secondary characteristics
(a)
We can know the likelihood of a certain coat color appearing if we cross the bull with his daughters, even if we don’t know the daughters’ specific genotypes.
true
false
These probabilities can help us determine how many normal offspring you need from a test mating to be certain your sire does not carry a recessive allele
true
false
the probability an individual will contribute a gamete with the dominant allele
p
q
the probability an individual will contribute a gamete with the recessive allele
p
q
Not every gamete forms a zygote
true
false
The more genes involved, the harder it is to observed
individual gene effects
true
false
the systematic measurement of performance (phenotype) in a population
(a)
matings designed to correct for the progeny faults of one or both parents.
(a)
Genetic change can occur at different speeds
true
false
information on the genotype or performance of ancestors and (or) relatives of an individual
(a)
determining which individuals will become parents for the first time
(a)
Animals with the best set of genes have the best
(a)
occurs independently of human control
(a)
determining which individuals will no longer be parents
(a)
information on the genotype or performance of descendants of an individual
(a)
deliberate, under human control
(a)
Predictions of breeding value (BV) can be quantitative or qualitative
true
false
