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WorksheetsCh 12
Total questions: 25
Worksheet time: 19mins
In the punnett square below, what belongs in the missing square
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.
This type of inheritance pattern is a MIXTURE of two traits. This is known as ---
incomplete dominance.
codominance
When one allele is not dominant over the other, resulting in both traits expressed in a heterozygous individual.....
Incomplete Dominance
Codominance
A woman with curly hair and a man with straight hair produced a child with wavy hair:
Incomplete dominance
Codominance
Complete dominance
This is an example of ---
Incomplete dominance
Codominance
What does this Punnett square and the probabilities of the ofspring represent?
incomplete dominance
codominance
A red flowered plant (RR) is crossed with a white flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance. What percentage of the offspring will have red (RR) flowers?
0%
25%
50%
100%
In mice coat color is incompletely dominant. Black and white are homozygous. Brown mice are heterozygous.
What is the genotype for a brown mouse?
BB
Bb
bb
Some flowers are controlled by codominance. Red flowers (RR), blue flowers (BB) and Speckled flowers (RB).
Cross a red flower with a speckled flower. What is the phenotypic ratio?
2 red, 2 speckled
2 red, 2 blue
2 blue, 2 speckled
True or False? Before cells undergo meiosis they pass through interphase first.
true
false
What is unique to Prophase I- is that the duplicated chromosomes pair up to form _______.
a centrosome
a tetrad
the mitotic spindle
sister chromatids
In which stage of MEIOSIS does crossing over occur? (The exchange of genetic material between chromosomes in a tetrad.)
Anaphase I
Metaphase I
Prophase I
Telophase I
How many cells are formed at the end of Meiosis II?
2
3
4
8
Which part of MEIOSIS is identical to MITOSIS?
Meiosis I
Meiosis II
The products of MEIOSIS have _______ number of chromosomes.
haploid
diploid
WHAT DOES MEIOSIS CREATE?
CHROMOSOMES
GAMETES
DNA
TRAITS
