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Q 1/15
Score 0
Which shows a heterozygous genotype?
120
Aa
aa
AA
Q 2/15
Score 0
If brown eyes are dominant to blue eyes, which of the following genotypes would represent blue eyes?
120
BB
bb
Bb
15 questions
Q.
Which shows a heterozygous genotype?
1
120 sec
Q.
If brown eyes are dominant to blue eyes, which of the following genotypes would represent blue eyes?
2
120 sec
Q.
If the color yellow is dominant over green in pea plants, how would you write the genotype for a homozygous yellow plant?
3
120 sec
Q.
If R is the dominant trait of roundness in pea plants and r is the recessive for wrinkled, what would the phenotypic ratio be if we crossed a heterozygous pea plant with a wrinkled one?
4
120 sec
Q.
If R is the dominant trait of roundness in pea plants and r is the recessive for wrinkled, what would the genotypic ratio be if we crossed two heterozygous plants?
5
120 sec
Q.
T is the dominant trait for tall and t is the recessive trait for short. What percentage of the offspring will be short if we crossed a homozygous tall plant with a short plant?
6
120 sec
Q.
If we crossed a red flower with a white flower and it resulted in a pink flower, what would explain this?
7
120 sec
Q.
Cattle can be red (RR = all red hairs), white (WW = all white hairs), or roan (RW = red & white hairs together). What is this an example of?
8
120 sec
Q.
Cattle can be red (RR = all red hairs), white (WW = all white hairs), or roan (RW = red & white hairs together). What would be the genotypic ratio if we crossed a Roan with a red haired cow?
9
120 sec
Q.
In rabbits, grey hair is dominant to white hair and black eyes are dominant to red eyes. How would write the genotype for a heterozygous grey and red eyed rabbit?
10
120 sec
Q.
In rabbits, grey hair is dominant to white hair and black eyes are dominant to red eyes. What would be the phenotypic ratio be if you crossed two heterozygous grey and black eyed rabbits?
11
120 sec
Q.
A man with type AB blood is married to a woman with type O blood. They have two natural children and one adopted child. Jane has type A blood, Bobby has type B blood, and Grace has type O blood.
Which child was adopted?
12
120 sec
Q.
In fruit flies, eye color is a sex linked trait. Red eye color is dominant to white. What is the phenotype for XRXr?
13
120 sec
Q.
In fruit flies, eye color is a sex linked trait. Red is dominant to white. What would result if we crossed a homozygous red eyed female with a white eyed male?
14
120 sec
Q.
A woman’s sister has cystic fibrosis, a disease caused by recessive genes. Neither of her parents has the disease. What chance is there that her mother is a carrier (heterozygous) for the trait? Draw a pedigree if needed.
