What is the purpose of using Punnett squares in genetics?

Genetics: Punnett Squares and Test Crosses

Interactive Video
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Biology
•
9th - 10th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To predict the possible genotypes of offspring
To determine the exact number of offspring
To calculate the age of an organism
To identify the parents' genotypes
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a simple dominant-recessive relationship, what does a big 'B' represent?
Dominant allele for brown fur
Recessive allele for brown fur
Recessive allele for black fur
Dominant allele for black fur
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you set up a Punnett square for two heterozygous individuals?
Place one parent's alleles on top and the other's on the side
Use only one parent's alleles
Use only dominant alleles
Place all alleles in one box
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the phenotype of an individual with a genotype of 'bb'?
Spotted fur
White fur
Brown fur
Black fur
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the probability of offspring having black fur if both parents are heterozygous?
1/4
1/2
3/4
1/3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is a test cross used in genetics?
To determine the phenotype of an organism
To identify the age of an organism
To find out the genotype of an unknown dominant phenotype
To calculate the number of offspring
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What genotype is crossed with an unknown dominant phenotype in a test cross?
Homozygous dominant
Heterozygous
Any genotype
Homozygous recessive
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