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Genetics Analysis And Principles 6th Edition By Robert Brooker 9781259616020 ALL Chapters .
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Test Bank For Genetics Analysis And Principles 6th Edition ByRobert Brooker 9781259616020 ALL Chapters .
Experimental advantages of using pea plants include which of the following?
a) they came in several different varieties
b) they were capable of self-fertilization
c)they were easy to cross
d) all of the above were advantages - ANSWER: D
with regard to Mendel's experiments, the term cross refers to an experiment in which - ANSWER: the
gametes come from different individuals
to avoid self-fertilization in his pea plants, Mendel had to - ANSWER: remove the anthers from
immature flowers
a pea plant it Tt. what is its genotype and phenotype (T is tall t is dwarf) - ANSWER: its genotype is Tt
and phenotype is tall
a Tt pea plant is crossed to a tt plant. what is the expected ratio of the phenotypes for offspring from
this cross - ANSWER: 1 tall : 1 dwarf
a pea plant has the genotype rrYy. how many different types of gametes can it make and in what
proportions - ANSWER: 1 rY : 1 ry
a cross is made between a pea plant that is RrYy and one that is rrYy. what is the predicted outcome
of the seed phenotypes - ANSWER: 3 round yellow; 1 round green; 3 wrinkle yellow; 1 wrinkle green
in population of wild squirrels, most of them have gray fur, but an occasional squirrel is completely
white. if we let P and p represent dominant and recessive alleles, respectively, of a gene that encodes
an enzyme necessary for pigment formation, what can you conclude about the p allele and what color
would pp squirrels be? - ANSWER: the white squirrels are pp and the p allele is a loss of function allele
which of the following would not be observed in a pedigree if a genetic disorder was inherited in a
recessive manner
a) 2 unaffected parents have an affected offspring
b) 2 affected parents have an unaffected offspring
c) 1 affected and one unaffected parent have an unaffected
d) all of the above are possible for a recessive order - ANSWER: B
what is the equation for probability - ANSWER: # of times a particular outcome occurs / total # of
individuals
what is the equation for binomial expansion - ANSWER: P=(n!/x!(n-x)!)(p^x q^n-x)
what does the P in the binomial expansion equation mean - ANSWER: probability that the unordered
outcome will occur
what does the n in the binomial expansion equation mean - ANSWER: total # of outcomes
what does the x in the binomial expansion equation mean - ANSWER: # of outcomes in one category
(e.g. blue eyes)
what does the p in the binomial expansion equation mean - ANSWER: individual probability of x
, what does the q in the binomial expansion equation mean - ANSWER: individual probability of the
other category (e.g. brown eyes)
what is the equation for the chi square test - ANSWER: x^2=(observed value-expected
value)^2/expected value
the offspring of a pea plant with purple flowers and a pea plant with white flowers would be called -
ANSWER: hybrids
a cross between a true breeding tall plant and a true breeding short plant is an example of - ANSWER:
hybridization experiment
a term used to describe the specific properties of a character, such as describing the eye color in a
person as brown, is a ___ - ANSWER: variant
a tall pea plant is crossed with a different tall pea plant. what type of cross is this - ANSWER: single
factor cross
in a genetic study that begins with you and your mate, you and your mate would be considered the
___ generation - ANSWER: P
in which of the following crosses would the offspring be called hybrids - ANSWER: a pea plant w
yellow seeds crossed to a pea plant w green seeds
the offspring of a genetic cross between organisms with distinctly different traits for a particular
character is called a ____ - ANSWER: hybrid
the term to describe the basic unit of heredity that influences an organism's traits is a(n) - ANSWER:
gene
supposed that a person has blonde hair. in genetic terms, blonde is the ___ and hair color is the ___ -
ANSWER: trait ; character
an alternative form of a gene is called a(n) - ANSWER: allele
a tall pea plant is crossed with a short pea plant. how would you describes this cross - ANSWER:
monohybrid cross and single factor cross
which of the following would be classified as the P generation?
a) the offspring of true breeding parents
b) the offspring of self-crossing the F1 generation
c) true breeding parents that are crossed - ANSWER: C
which of Mendel's laws explains why a gamete only has one copy of each gene - ANSWER: law of
segregation
If a genetic study began with your grandparents, which generation would represent you and your
siblings? - ANSWER: F2
Mendel studied many morphological characteristics such a pea pod color, flower color and plant
height. today, these "characters" that mendel studied are known to be influenced by units of heredity
called - ANSWER: genes
if an organism has identical alleles for a given trait it is said to be - ANSWER: homozygous
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