Biology, WednesdayExit Ticket, 2.13.19

What would indicate a normal human male?

• XX
• X
• XY
• XXY

What is a phenotype?

• The expression of a trait; physical appearance.
• refers to the genetic makeup of an individual
• An organism that has the same genes for a trait (ex. TT or tt)
• the passing of traits from parent to offspring

Tags

NGSS.HS-LS3-1

What does heterozygous mean?

• An organism that has the same genes for a trait (TT or tt)
• An organism that has different genes for a trait (Tt)
• When neither gene is fully dominant; offspring is a mixture of both
• the different forms of a trait (hair color--> brown, blonde, red

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

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

A human usually has _____ total chromosomes.

• 6
• 22
• 4
• 46

Colorblindness is a recessive, X chromosome sex-link disorder. Cross the parents to figure out which percentage of their offspring will be colorblind.

• 25%
• 0%
• 75%
• 50%

Tags

NGSS.HS-LS3-1

Squidward has light blue skin, and his genotype for this trait is Bb. Which of the following would describe Squidward?

• Purebred

• Hybrid

• Homozygous

• Sex-linked

Tags

NGSS.HS-LS3-1

In a pedigree, what shape represents a male?

• circle
• square
• triangle
• diamond

What do we use pedigrees for?

• To look at families
• To make determinations about the offspring
• To track traits in families
• Nothing

How many alleles (letters) does a child get from each parent for each trait?

• 1
• 2
• 3
• 4

Tags

NGSS.HS-LS3-1