Exam 10: Foundations of Genetics

The ability to taste PTC is a dominant trait.If a heterozygote woman has a child with a man who is not a taster,what is the chance their child will be a taster?

White flower color is recessive to purple.What is the genotypic ratio when two heterozygous pea plants are crossed?

A genetic family tree can more correctly be called a ____________.

Human height shows a continuous variation from the very short to the very tall.Height is most likely controlled by

Which of the following represents a test cross?

The degree of earlobe attachment in humans is inherited as a simple dominant allele of free earlobes,or as a recessive allele of attached earlobes.What is the probability that a woman with attached earlobes will have children with attached earlobes if their father has free earlobes,but his father had attached earlobes?

When a gene is carried on one of the sex chromosomes,it is said to be __________________.

Mendel's Law of Independent Assortment states that genes located on different chromosomes are inherited independently of one another.If this is the case,what happens when two genes are located on the same chromosome: are they inherited together,do they separate,or both?

Whose work with fruit flies presented the first clear evidence that the genes determining Mendelian traits reside on chromosomes?

What discovery by T.H.Morgan finally determined that genes were carried on chromosomes?

Which of the following is a sex-linked disorder?

The diploid number of chromosomes in humans is 46.The haploid number is

The closer two genes are to each other on a chromosome,the more likely they are to segregate independently.

There are 3 alleles that lead to the ABO blood types.How many alleles does an individual inherit from their parents?

If several traits are affected by the same allele,the allele is said to be

If a white-flowered pea plant (ww)is crossed with a heterozygous purple-flowered plant (Ww),what will their offspring look like?

Which of the following analyses is not used in genetic screening of fetal cells?

Foxes,cats,and rabbits have enzymes that are heat-sensitive,causing a seasonal variation in coat color due to

The offspring of the P generation are referred to as the

A central role for chromosomes in heredity was first suggested by