Mendelian inheritance

Which of the following statements is true about Mendel?

• His discoveries concerning genetic inheritance were generally accepted by the scientific community when he published them during the mid-19th century.

• He believed that genetic traits of parents will usually blend in their children

• His ideas about genetics apply equally to plants and animals.

Mendel believed that the characteristics of pea plants are determined by the

• inheritance of units or factors from both parents

• inheritance of units or factors from one parent

• relative health of the parent plants at the time of pollination

An allele is

• another word for a gene

• a homozygous genotype

• a heterozygous genotype

• one of several possible forms of a gene

Phenotype refers to the ______________________ of an individual.

• genetic makeup

• actual physical appearance

• recessive alleles

In the diagram , what accounts for the green pea seed in the f2 generation?

• On average, 1 out of 4 offspring of heterozygous parents will be homozygous recessive.

• The yellow allele is dominant over the green one

• The f1 generation parents are homozygous yellow.

The ratio often referred to the Mendelian ratio is

• 1:3:1

• 1:1

• 3:1

The model for the dihybrid cross of heterozygotes predicts a phenotypic ratio of 9:3:3:1.

• True

• False

What, according to Medel, was responsible for the inheritance of specific traits?

• Genes

• Factors

• Chromosomes

• DNA

What determines the differences between the progeny and parents?

• Inheritance

• Heritage

• Genetics

• Variation

Mendel took _______ contrasting characteristics of pea plants.

• 8

• 7

• 6

• 5