Biology FINAL Review

What is the definition of Homozygous?

• When one allele is dominant and one is recessive
• When an individual has two sets of the same allele.
• when it is neither dominant or recessive

what is the definition of Heterozygous? 

• when an individual has two sets of the same allele
• when it is neither dominant or recessive
• A pair of genes where one is dominant and one is recessive.

The genotype is the ______________.

• physical appearance
• Genetic makeup
• Alleles gained from one parent

The phenotype is the _______________.

• physical appearance of an organism
• Genetic makeup 
• Alleles acquired from a specific parent.

An allele whose trait only shows up when no dominant allele is present.

• hidden allele
• dominant allele
• recessive allele
• present allele

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

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

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

The letters on the TOP AND SIDE of a punnett square represent ______________.

• The combination of alleles in offspring.
• The possible alleles given by the parents following meiosis.
• The genotype and phenotype of offspring.
• The results of genetic mutations in offspring.

Tags

NGSS.HS-LS3-1

True or False: If a dominant allele is present, the trait will always appear in the organism.

• True
• False

This is an example of what?

• Complete dominance
• Incomplete dominance
• Codominance
• None of the above

Tags

NGSS.MS-LS3-2