IB Genetics 3.4

Which is the set of alleles that an individual possesses?

• A gene
• A genotype
• A genome
• A genus

What is a genetic test cross?

• Testing a suspected homozygote by crossing it with a known heterozygote
• Testing a suspected heterozygote by crossing it with a known heterozygote
• Testing a suspected homozygote by crossing it with a known homozygous dominant
• Testing a suspected heterozygote by crossing it with a known homozygous recessive

What is a suspected heterozygous individual crossed with in a test cross?

• Homozygous dominant
• Homozygous Recessive
• Heterozygous dominant
• Heterozygous recessive

The ABO blood grouping system has alleles of I^A, I^B and i. What is this an example of?
a) co-dominance
b) multiple alleles
c) sex-lingage
d) polygenic traits

• a) only
• a) and b) only
• b) and c) only
• b) and d) only

A parent organism of unknown genotype is mated in a test cross.  Half of the offspring have the same phenotype as the parent.  What can be concluded from this result?

• The parent of unknown genotype is heterozygous
• The parent of unknown genotype is homozygous dominant
• The parent of unknown genotype is homozygous recessive
• The parent of known genotype is heterozygous

Tags

NGSS.HS-LS3-1

If an organism that is homozygous recessive for a trait is crossed with a heterozygote, what is the chance of getting a homozygous recessive phenotype in the first generation?

• 0%
• 25%
• 50%
• 100%

Tags

NGSS.HS-LS3-3

Boys can inherit the recessive allele (c) that causes red-green color blindness from their mother, not from their father.  The allele for normal red and green vision is C.  Which of the following genotypes are possible in men?

• c only
• C or c only
• CC or cc only
• CC, Cc or cc only

Tags

NGSS.HS-LS3-1

A man of blood group A and a woman of blood group B have a child.  If both are heterozygous for the gene, what are the chances of them having a child with blood group B?

• 0%
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

If a man has blood group O and a woman has blood group AB, what is the probability that their child will be blood group O?

• 0%
• 25%
• 50%
• 100%

Tags

NGSS.HS-LS3-1

A woman is a carrier for hemophilia and a man who does not have hemophilia have a child.  What is the probability that the child will have hemophilia?

• A
• B
• C
• D

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3