103-Genetics

The genotype of an organism describes the

• codons that make up the genes
• number of gene's on the chromosmes
• genetic make-up of a trait
• type of chromosomes in the nucleus

Which term describes the different forms of a gene

• Chromosome

• Allele

• DNA

• Punnett Squares

Aa, DD, Bb, yy are all examples of _______

• genotypes

• phenotypes

If something is heterozygous, it is also _____

• purebred

• hybrid

• dominant

• recessive

If something is homozygous, it can also be called____

• phenotype

• genotype

• hybrid

• purebred

A homozygous dominant dog with brown fur is crossed with a heterozygous dog with brown fur. What are the percentages of the possible genotypes?

• 100% BB
• 75% BB and 25%Bb
• 50 % BB and 50% Bb
• 50% Bb and 50% bb

Which of the following is a phenotype?

• BB
• Bb
• bb
• Blue eyes

G = green, g = yellow
The genotype for a yellow plant is...

• GG
• Gg
• gg
• all of the choices result in yellow

Which of the following is homozygous dominant?

• Yy
• Y
• yy
• YY

Which of the following is homozygous recessive?

• Tt
• tt
• TT
• T