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WorksheetsMonohybrid, Incom/Co, Blood Types, Sex Linked Crosses
Total questions: 25
Worksheet time: 2hrs 5mins
The physical expression of a genetic trait is called a
mutation
genotype
crossing over
phenotype
RR X Rr
In the punnett square below, what belongs in the missing square
The blending of two traits is known as ---
incomplete dominance
codominance
Radish color is incompletely dominant, red and white are pure breeding colors. While heterozygous are purple.
Cross a red radish with a purple.
4 purple
1 red, 2 purple, 1 white
2 red, 2 purple
1 red, 1 purple, 2 white
The hair form gene shows incomplete dominance. If your genotype is SS, you will have straight hair. If your genotype is CC, you will have curly hair. If your genotype is SC, you will have wavy hair. Mr. and Mrs. Anderson both have wavy hair (SC). What percentage of their children will also have wavy hair (SC)?
25%
50%
75%
100%
A condition in which both alleles for a gene are expressed so that both traits are visible is known as ---
Codominance
Incomplete dominance
Some flowers are controlled by codominance. Red flowers (RR), blue flowers (BB) and Speckled flowers (RB).
Cross two speckled flowers.
1 red, 2 speckled, 1 blue
2 red, 2 blue
2 blue, 2 speckled
1 red, 1 speckled, 2 blue
Complete a cross between A speckled flower and a red flower. Find the phenotype ratio.
In fruit flies, eye color is a sex linked trait. Red (R) is dominant to white (r). What is the sex and eye color of flies with the following genotype: X R X r ?
male with white eyes
female with red eyes
male with red eyes
female with white eyes
In fruit flies, eye color is a sex linked trait. Red (R) is dominant to white (r). What is the sex and eye color of flies with the following genotype: X R Y ?
male with white eyes
female with white eyes
male with red eyes
female with red eyes
In fruit flies, eye color is a sex linked trait. Red (R) is dominant to white (r). What is the sex and eye color of flies with the following genotype: X r Y ?
male with red eyes
female with red eyes
male with white eyes
female with white eyes
What are the genotypes of these flies:
red eyed, male ?
X R X r
X R X R
Xr X r
X r Y
X R Y
What are the genotypes of these flies:
red eyed female (heterozygous) ?
X R X r
X R X R
Xr X r
X r Y
X R Y
In a cross between a pure red eyed female and a white eyed male, what would the genotypes of the parents be?
XRXr with XR Y
XRXr with Xr Y
XRXR with XR Y
XRXR with Xr Y
XrXr with Xr Y
H= normal blood clotting
h=hemophilia
XHXh x XHY
What is the probability that any of their offspring will have hemophilia?
4/4
3/4
2/4
1/4
Look at this cross: XBXb x XBY
What proportion of the male children are colorblind?
100%
75%
50%
25%
Look at this cross: XB XB x Xb Y
What proportion/percent of the male children are colorblind?
100%
75%
25%
0%
