Bio Chapter 11.1-11.3
How many different allele combinations would be found in the gametes produced by pea plant whose genotype was RrYY?
2
A heterozygous tall pea plant is crossed with a short plant. the probability that an F1 plant will be tall is
50%
If you made a Punnett square showing Gregor Mendel's cross between true-breeding tall plants and true-breeding short plants, the square would show that the offspring had
a genotype that was different from that of both parents
In the P generation, A tall plant was crossed with a short plant. If alleles did not segregate during gamete formation
all of the F2 plants would be tall
Mendel's principles of genetics apply to
all organisms
When Mendel crossed a tall plant with a short plant, the F1 plants inherited
an allele for tallness from the tall parent and an allele for shortness from the short parent
Offspring that result from crosses between parents with different traits
are called hybrids
A cross of a black chicken (BB) with a white chicken (WW) produces all speckled offspring(BBWW) this type of inheritance is known as
codominance
A male and female bison that are both heterozygous for normal skin pigmentation produce an albino offspring. which of mendel's principles explains why the offspring is albino
dominance and segregation
The chemical factors that determine traits are called
genes
If a pea plant has a recessive allele for green peas, it will produce
green peas if it does not also have a dominant allele for yellow peas
Organisms that have 2 identical alleles for a particular trait are said to be
homozygous
Situations in which one allele for a gene is not completely dominant over another allele for that gene are called
incomplete dominance
Gregor Mendel concluded that traits are
inherited through the passing of factors from parents to offspring
Gregor Mendel removed the male parts from the flowers of some plants in order to
make controlled crosses between plants
Variation in human skin color is an example of
polygenic traits
the principles of probability can be used to
predict the traits of the offspring produced by genetic crosses
What principle states that during gamete formation genes for different traits separate without influencing each other's inheritance
principle of independent assortment
The principle of dominance states that
some alleles are dominant and others are recessive
A tall plant is crossed with a short plant. if the tall F1 pea plants are allowed to self-pollinate,
some of the offspring will be tall and some will be short
Punnett squares show all of the following EXCEPT
the actual results of a genetic cross
In the P generation, a tall plant was crossed with a short plant. Short plants reappeared in the F2 generation because
the allele for shortness and the allele for tallness segregated when the F1 plants produced gametes
When Gregor Mendel crossed true-breeding tall plants with true-breeding short plants, all the offspring were tall because
the allele for tall plants is dominant
Gregor Mendel used pea plants to study
the inheritance of traits
Why did Thomas hunt Morgan use fruit flies in his studies
they produce a large number of offspring
