CHAPTER 9 NOTES – Flashcards

Does an increase in age of the mother increase the chances that offspring will have Down Syndrome?

Who is called the Father of Genetics?

Nondisjunction occurs when:

A breeding experiment in which the parental varieties differ in only one trait is called a(n):

An organism with two different alleles for a single trait is said to be homozygous for that trait. True or false, and why?

The alleles of a gene are found at the ___ locus on ____ chromosomes.

What are three examples of polygenic inheritance?

Dr. Smith's parents have normal hearing. However, Dr. Smith has an inherited form of deafness. Deafness is a recessive trait that is associated with the abnormal allele d. The normal allele at this locus, associated with normal hearing, is D. Dr. Smith's parents could have which of the following genotypes?

Most people afflicted with recessive disorders are born to parents who were:

All of the offsping of a cross between a red-flowered plant and a white-flowered plant have pink flowers. This means that the allele for red flowers is _____ to the allele for white flowers.

Which of the following is an example of incomplete dominance in humans?

A person with AB blood illustrates the principle of:

How many sex chromosomes are in a human gamete?

Sex-linked conditions are more common in men than in women because:

For the following blood types, determine which parents baby 1 belongs to: Baby 1 has type B blood Possible parents: Mr. Doe has type A Mrs. Doe has type A Mr. Jones has type AB Mrs. Jones has type A

Which of the following statements is true concerning inheritance of autosomal dominant disorders?

Two ___ parents will always have affected children, when referring to the inheritance of autosomal recessive disorders.

Which of the following is an autosomal dominant disorder?

To be affected with a sex-linked disorder, daughters must inherit it from ____.

Both a man and a woman are heterozygous for freckles. Freckles (F) are dominant over no freckles (f). What is the chance that their child will have freckles?

Where is the SRY gene found?

What is the SRY gene?

A mutation in the BRCA gene causes:

What is a genetic test that tracks the inheritance pattern of a trait through multiple generations?

Klinefelter's syndrome is represented by the genotype:

Turner syndrome occurs in:

The genotype XYY represents a:

A monohybrid cross is:

A carrier of a genetic disorder who does not show symptoms is likely to be _____ to transmit it to offspring.

People afflicted with recessive disorders are born to parents who were ___ for the trait.

R is dominant to r, the offspring of the cross of RR with rr will be:

If mom is a carrier of baldness and dad is bald, what is the probability that one of their sons will be bald? Baldness is an x-linked disorder.