Which of the following is not a component of Mendel's five-element (please note that the answers use the modern term gene instead of factor)?

-the two alleles are usually the same

A(n) _____________ square can be used to predict the outcome of a simple genetic cross.

-Punnett

Which of these traits exhibit a dominant mode of inheritance?

-Polydactyly
-Mid-digital hair
-Hypercholesterolemia

Match these terms with their definitions.

-homozygous- individual carries two identical alleles of a gene
-heterozygous-individual carries two different alleles of a gene

In a typical monohybrid cross, all of the offspring in which generation will exhibit a single trait without blending?

-F1

The physical appearance or other observable characteristic of an individual is called his/ her ______________.

-phenotype

A Punnett square has rows and columns which represent gametes made by made by males and females. At the intersection of each row and column we combine the corresponding gametes to produce the genotype of a potential _______________.

-zygote

This is the idea that two alleles of a gene separate during the formation of eggs and sperm so that every gamete receives only one allele.

-Principle of segregation

In pea plants, the allele T codes for tall plants and the allele t codes for short plants. A plant that is Tt has a ____________ genotype and a phenotype of ____________.

-heterozygous;tall

The ___________ form of a trait is the one that is not expressed in the F1 generation of a monohybrid cross.

-recessive

Match these traits with their characteristics in humans:

-Albinism--lack of melanin pigmentation
-Hemophilia--inability of blood to clot properly
-Polydactyly--extra fingers and toes
-Huntington disease--degeneration of nervous system
-Sickle cell anemia--defective hemoglobin

Which of these traits is not correctly matched with its mode of inheritance?

-Red-green color blindness: dominant

This analysis is appropriate for studying traits, such as genetic diseases, that follow simple Mendelian patterns:

-pedigree

An individual's total set of alleles for a particular trait is called his/her ____________.

-genotype

In Mendel's experiments, he observed a 3:1 ratio between dominant and recessive traits in...

-the F2 generation of monohybrid crosses

A cross in which only a single trait is considered is called a(n) _____________ cross or a single factor cross.

-monohybrid

Characteristics of albinism include...

-sun sensitivity
-loss of pigment

Although he did not know it, Mendel's principle of segregation's scientific basis is meiosis. The second meiotic division produces gametes that contain...

-one homologue for each chromosome

Regarding the phenotypes in a monohybrid cross, the F1 heterozygotes display..

-one trait

When Mendel crossed white-flowered and purple-flowered plants the hybrid offspring in the first ____________ generation, or F1 generation, were all _____________ (what color?).

-filial
-pruple

Segregation of alleles occurs during which of the following processes?

-Meiosis