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Mendel
Probability
Genetics
Meiosis
100
Gregor Mendel concluded that traits are
Inherited through the passing of factors from parents to offspring.
100
__________ is the likelihood that a particular event will occur.
Probability
100
A cross of a black chicken with a white chicken produces all speckled offspring. This type of inheritance is known as
codominance
100
If an organism’s diploid number is 12, its haploid number is
6
200
The principle of dominance states that
Some alleles are dominant and others are recessive
200
Organisms that have two identical alleles for a particular trait are said to be
homozygous
200
Variation in human skin color is an example of
Polygenic traits
200
Unlike mitosis, meiosis results in the formation of
4 haploid cells that are genetically different
300
A tall plant is crossed with a short plant. If the tall F1 pea plants are allowed to self-pollinate what will the offspring look like.
Some of the offspring will be tall, and some will be short.
300
How many different allele combinations would be found in the gametes produced by a pea plant whose genotype was RrYY?
2
300
Why did Thomas Hunt Morgan use fruit flies in his studies?
Fruit flies produce a large number of offspring
300
Chromosomes form tetrads during
Prophase I of meiosis
400
Define genetics
Scientific study of heredity
400
In the P generation, a tall plant is crossed with a short plant. The probability that an F2 plant will be tall is
75%
400
An organism’s gametes have _____ the number of chromosomes found in the organism's body cells.
half
400
Define homologous chromosomes
2 sets of corresponding chromosomes, 1 set from dad and 1 set from mom
500
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
500
When two heterozygous tall pea plants are crossed, the expected genotype ratio of the offspring is
1:2:1
500
A male and female bison that are both heterozygous for normal skin pigmentation (Aa) produce an albino offspring (aa). Which of Mendel’s principles explains why the offspring is albino?
Dominance and segregation
500
Explain why the daughter cells produced by meiosis are genetically different from each other, whereas the daughter cells produced by mitosis are not.
Meiosis begins with a diploid cells and produces 4 different haploid cells because the DNA is replicated and crossing over occurs so they interchange alleles