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A mother with blood type O has a child with blood type A. What is the child’s genotype?

A mother with blood type O has a child with blood type A. What is the child’s genotype?

If a man shows the phenotype for an X-linked Dominant trait, all of his daughters will show the phenotype as well.

A true-breeding blue flowered dwarf plant (BBtt) is crossed with a true-breeding white-flowered, tall plant (bbTT). Assume complete dominance and independent assortment of the alleles.   What is the genotype of the F1 generation? What is the phenotype of the F1 generation? What types of gametes can be produced from the F1 plants? List the phenotypes and ratios of the F2 generation.

Gina is married to Lloyd and they have decided to start having children.  Gina is not colorblind, but in a previous marriage, she had a daughter who is red-green colorblind.  Her first husband was also colorblind.  Lloyd sees normally and does not have the disease.  Lloyd’s mother is not colorblind but his father is.  Answer the following questions about this scenario.  It might help you to draw a pedigree to answer the questions.  This type of colorblindness follows the pattern of  X-linked recessive inheritance. A.  What is Lloyd’s genotype? B.  What is Gina’s daughter’s genotype? C.  What is the probability Gina is a carrier for the colorblind allele? D.  What is the probability Gina and Lloyd will have a daughter who is colorblind? E.  What is the probability Gina and Lloyd will have a boy with the disease?  (It might help to draw a punnett square.)

Which of the following is not an example of polygenic trait?

Two plants that are both heterozygous for two traits are crossed together to produce offspring in a 9:3:3:1 ratio. What is the genotype for the two plants that are crossed?

A plant that is tall and green (TTGG) is crossed to a plant that is short and white (ttgg). What is the genotype of the F1 generation?

If a trait shows complete dominance, the dominant phenotype is always seen more often than the recessive phenotype in a population.

If a man shows the phenotype for an X-linked Dominant trait, all of his daughters will show the phenotype as well.