Exam 12: Chromosomal Basis of Inheritance

A woman who is color blind,a sex-linked trait,has several children with a man who has normal vision.What are the possible phenotypes of their children with respect to this trait?

A woman who is heterozygous for the hemophilia allele has a 100% chance of having an affected son.

Synapsis usually forms between nonsister chromatids.

Plants that produce separate male and female flowers are said to be

Which of the following statements is not true?

Some cells may exit the cell cycle and enter a nondividing G₀ state.

The spindle fibers attach to the centromere via a protein complex called

The largest human autosome is chromosome ________ and the smallest is chromosome ________.

You are a breeder of animals with an X-linked coat-color gene,one allele of which gives black fur and another of which gives white fur.If you cross a black-colored female with a white-colored male,what would their male and female offspring look like?

Why will a human embryo develop as a male in the presence of a Y chromosome,regardless of the number of X chromosomes present?

The key gene in mammalian sex determination is

Cells obtained from a Triplo-X woman would contain ________ Barr bodies.

The centrioles are highly conserved chromosome regions that interact with spindle fibers during cell division.

What are the differences between metaphase I and metaphase II of meiosis?

In flowering plants,gametes are produced mitotically from spores.

Nondisjunction is the failure of sex chromosomes to separate during gamete formation.

Individuals with Turner syndrome are

Which of the following is an example of genetic mosaicism?

Red-green color blindness in humans is an X-linked recessive trait.What will the progeny ratios be if a carrier female is mated with a normal male?

Which of the following organisms has a ZZ-ZW method of sex determination?