
Understanding X-linked Recessive Traits
Interactive Video
•
Biology
•
9th - 10th Grade
•
Hard
Nancy Jackson
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a shaded circle represent in a pedigree chart?
An affected male
An affected female
An unaffected female
An unaffected male
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How are generations labeled in a pedigree chart?
Using Arabic numerals
Using Roman numerals
Using letters
Using colors
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in determining if a trait is dominant or recessive?
Checking if all affected individuals have affected parents
Counting the number of affected females
Counting the number of affected males
Checking if the trait skips generations
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What indicates an X-linked recessive condition in a pedigree?
More affected females than males
Equal number of affected males and females
No affected individuals
More affected males than females
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is a 'Y' added as the second letter for males in X-linked conditions?
To indicate they are unaffected
To show they have one X and one Y chromosome
To indicate they have two X chromosomes
To represent a dominant trait
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What must all affected individuals have in a recessive condition?
At least one uppercase A
Two uppercase A's
One uppercase A and one lowercase a
Two lowercase a's if female, one lowercase a if male
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the second letter determined for an individual's genotype?
By guessing based on the parents' genotypes
By checking the individual's phenotype
By analyzing the parents' contributions
By observing the individual's siblings
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