Genetics basics

Tt is-

• homozygous dominant
• homozygous recessive
• heterozygous
• none of these

The observable traits of an organism are known as its

• allele
• dominance
• phenotype
• genotype

Each parent contributes one of the genes for a particular trait. The genes of the pair are called:

• variables
• gametes
• hybrids
• alleles

Chromosomes that carry genes that code for the same products, such as hemoglobin or eye pigment, are said to be:

• homologous
• heterozygous
• heterogeneous
• homozygous

Which of the following best describes a GENOTYPE?

• The allele/genetic makeup of an organism.
• The physical expression of a trait.

Dominant alleles are represented by a(n)

• phenotype
• lower case letter
• upper case letter
• punnett square 

Round (R) seeds are dominant to wrinkled (r) seeds.
What is the genotype for a homozygous dominant offspring?

• RR
• Rr
• rr

Short hair (S) is dominant to long hair (s).
What is the genotype for an offspring with long hair?

• SS
• Ss
• ss

Passing on traits from parents to offspring

• Chromosome

• Genotype

• Heredity

• Allele

The study of heredity

• Genetics

• Genome

• Allele

• Punnett Square