chapter 11 - Intro to Genetics

which is heterozygous ?

• Tt

• TT

Which is homozygous ?

• Zz

• SS

the genetic makeup of an organism

• heterozygous

• punnet square

• genotype

Genotype refers to the ...

• physical expression of the genes

• the possible combination of alleles in a gene

• whether an allele is dominant or recessive

• how an organism will appear

An offspring will receive how many alleles from each parent to determine a specific trait?

• one

• two

• three

• five

What is a phenotype

• The genetic make up (code)

• The physical trait

having two of the same genes for the trait (sometimes called purebred).

• homozygous

• hetrozygous

• protein

• chromosome

G = green, g = yellow

This gene shows complete dominance. The genotype for a yellow plant is...

• GG

• Gg

• gg

• all of the choices result in yellow

Which best describes the process shown?

• mutation in which the DNA content of the gene is ltered
• segregation of sister chromatids
• condensation and segregation of the alleles
• crossing-over which alleles are exchanged

Sex cells are produced through the process of

• mitosis
• cytokinesis
• binary fission
• meiosis