Biology 14.1 Assessment

2b. If a woman with type O blood and a man with type AB blood have children, what are the children possible genotypes?

/Ai and /Bi.

3a. What does a Pedigree Show?

A Pedigree shows the presence or absence of a trait over several generations within a family.

3b. Why would the Y chromosome be unlikely to contain any of the genes that are absolutely necessary for survival?

A female child would not survive because females do not have a Y chromosome

1c. How can you use karyotypes to identify a species?

A karyotype cell shows the complete set of chromosomes in a cell, and are displayed in order by size. The number and size of chromosomes varies from one species to the next.

2a. Explain on how sex-linked traits are inherited.

A sex-linked trait is controlled by a recessive allele on the X chromosome. Because males only have one X chromosome, they will show the trait when they inherit an X chromosome with the allele.

1a. What are autosomes?

Autosomes are chromosomes that are not sex chromosomes.

1b. What determines wether a person is male or female?

Females have 2 X chromosomes whereas a male has an X and a Y chromosome.