What is the probability that benjamin will be homozygous

Question

Heredity Quiz

Question 1: In peas, purple is dominant over white for flower color. Suppose a purple flower is crossed with a white flower. Some of the offspring are purple, and others are white. What is the genotype of the original purple flower?
A. PP
B. Pp
C. pp
D. either PP or Pp

Question 2: List all possible gametes that can be produced from a cell that has the following genotype: AaBBDd.
A. A, a, B, D, d
B. ABD, ABd, AbD, Abd, aBD, aBd, abD, abd
C. ABD, abd
D. ABD, ABd, aBD, aBd

Question 3: Which relationship is correct?
A. Protein is to genotype as DNA is to phenotype.
B. Phenotype is to protein as DNA is to genotype.
C. Protein is to phenotype as DNA is to genotype.
D. Protein is to phenotype as genotype is to DNA.

Question 4: Crossing over occurs: _______________.
A. during mitosis but not meiosis
B. during meiosis II only
C. during meiosis I only
D. during both meiosis I and meiosis II

Question 5: A homozygous dominant germ cell undergoes meiosis. The gametes will _________________________.
A. either have the dominant or the recessive allele
B. have both the dominant or the recessive allele
C. only have the dominant allele
D. only have the recessive allele

Question 6: Homozygous is a term that can describe a(n) _____________.
A. genotype
B. allele
C. phenotype
D. heterozygous

Question 7: An individual that expresses the dominant trait of a dominant/recessive gene
A. must be homozygous
B. must be heterozygous
C. can be either homozygous or heterozygous

Question 8: The next three questions are based on the following information.
In humans, the ability to roll the tongue (T) is dominant over the inability to do so (t). Suppose Mike, who can roll his tongue, and Jeannie, who cannot roll her tongue, have a child, Benjamin.
Part 1 of 3: If Mike's mother was able to roll her tongue but his father was not able to roll his, then what is the probability that Benjamin will be able to roll his tongue?
A. 0%
B. 75%
C. 100%
D. 50%

Question 9: Part 2 of 3: What is the probability that Benjamin will be homozygous recessive?
A. 75%
B. 100%
C. 0%
D. 50%

Question 10: Part 3 of 3: What is the probability that Benjamin will be homozygous dominant?
A. 100%
B. 0%
C. 75%
D. 50%

Question 11: Alleles are different versions of a _______________.
A. gene
B. chromosome
C. genotype
D. phenotype

Question 12: Peter gets his blood tested and finds out that he is B+. This test identified a
A. Genotype
B. Phenotype
C. Chromosome
D. DNA.