Crash Course Biology #9

If a gene is found only on the X chromosome and not the Y chromosome, it is said to be what?

• sex-linked trait
• polygenic trait
• codominant trait
• incomplete dominance trait

What type of inheritance is determined by multiple genes located at different loci on different chromosomes and there can be a range of traits?

• Pleiotrophic traits
• Incomplete dominance
• Polygenic traits
• simple mendelian genetics

True or False: Females have both an X chromosome and a Y chromosome.

• True
• False

Hank discussed Sex Linked Inheritance. Use this information to answer the following question:
Hemophilia is a recessive x-linked disorder.
Which genotype represents a female who is a carrier for hemophilia?

• X^HX^h
• X^hX^h
• X^HX^H
• X^hY

Hank discussed Sex Linked Inheritance. Use this information to answer the following question:
Hemophilia is a recessive x-linked disorder.
Which genotype represents a male with hemophilia?

• X^HX^h
• X^hX^h
• X^HY
• X^hY

An allele that will produce a trait that masks another trait for the same characteristic (prevents it from being expressed).

• Dominant
• Recessive
• Allele
• Gene

True or False: Earwax and armpit sweat are produced by the same type of gland and are controlled by the affects of a single gene.

• True
• False

Pleiotropy is a term used to describe

• Multiple phenotypic affects of a single gene
• Many genes controlling a single phenotype

Which of the following is the passing of genetic traits from parent to offspring.

• heredity
• trait
• gene
• allele

Tags

NGSS.HS-LS3-1

What is a gene?

• An entire chromosome that  codes for a trait
• a piece of clothing
• a piece of a DNA on chromosome that codes for a trait
• Chemical messengers in your brain that code for a trait

Tags

NGSS.HS-LS3-1