Exam 19: Introduction to Genetics

A person who inherited the allele combination Aa is ____.

If C is dominant to c, what fraction of offspring will show the recessive phenotype when two heterozygous parents are crossed?

The probability that an individual who inherits an allele will have the phenotype associated with it is known as ____.

If all offspring of a cross have the genotype Aa , the parents of the crosses would most likely be ____.

How many copies of a specific allele does a gamete cell have?

In humans, normal skin pigmentation is influenced by a dominant gene ( C ), which allows pigmentation to develop. All individuals who are homozygous for the recessive allele ( c )are unable to produce an enzyme needed for melanin formation and are therefore referred to as albino. Two normal parents produce an albino child. What are the chances that the next child will be an albino?

If tall (D)is dominant to dwarf (d), and two homozygous varieties DD and dd are crossed, then what kind of offspring will be produced?

The separation of gamete pairs during meiosis is known as ____.

If red flowers (R)is dominant over white flowers (r), plants with rr are ____.

In the human genome, there are about how many genes?

The observable genetic traits of an individual refers to his or her ____.

Which condition shows 100 percent penetrance?

In the cross Cc ´ Cc , gametes have a ____ chance of receiving either allele.

Earlobe attachment is an example of ____.

The process by which alleles in one gene move into gametes independent of alleles in other genes is known as ____.

What fraction of the time will the cross of Aa Bb with Aa Bb produce an offspring that will express the dominant trait for one of the two alleles?

If two copies of a gene are different alleles, the condition is referred to as ____.

If R is dominant to r , the offspring of the cross of RR with rr will ____.

A person who inherited the allele combination AA is ____.