Grade 9 Heredity & Variation

Grade 9 Heredity & Variation

By Savita Singh

Multiple Choice

Every living thing has genetic information stored in the form of

• Ribosomes

• DNA

• Chloroplast

• Mitochondria

Multiple Choice

If two alleles are the same for a certain trait they are considered

• Homozygous

• Twins

• Heterozygous

• Common

Multiple Choice

Physical traits that are expressed are known as ____________

• Mutation

• Personality

• Genotype

• Phenotype

Multiple Choice

Sections of DNA that have instructions for a specific trait are called _______________

• Blueprints

• Genes

• Heterozygous

• Fragments

Multiple Choice

Chromosomes are

• Found in the mitochondria

• Made of 20 pairs

• Long strands of DNA that contain many genes

• Bundles of DNA that contain only one gene each

Multiple Choice

In science, mutations are

• The reason the X-Men exist

• Genetically engineered creatures that you fight in the Hunger Games

• A change in the DNA of an organism that produces new traits

• Always helpful for survival

Multiple Choice

Traits that are passed from parents to offspring are always

• Recessive

• Inherited

• Dominant

• Heterozygous

Multiple Choice

The passage of genetic instructions from one generation to the next is known as

• Alleles

• Ancestry

• Heredity

• Variation

Multiple Choice

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

Multiple Choice

Emily has brown hair. Which is most likely a true statement about Emily?

• Emily’s favorite color is brown.
• Emily has a parent with brown hair.
• Emily’s older brother has brown hair. 

Multiple Choice

James and his father are both great athletes. Which characteristic did James most likely learn from his father?

• height and weight
• fast swimming stroke
• large feet and hands
• muscular body structure

Multiple Choice

Which statement best supports why many offspring look similar to their parents?

• Offspring inherit characteristics from one parent.
• Offspring inherit characteristics from both parents.
• Parents choose which characteristics to pass on to their offspring.
• Parents choose to change their appearance to match that of their offspring.

Multiple Choice

Chromosomes are found in the ____________ of the cell

• Chloroplast
• Nucleus
• Cytoplasm
• Mitochondria

Multiple Choice

Which sex chromosomes would indicate a typical human male?

• XX
• X
• XY
• XXY

Multiple Choice

Chromosomes that determine whether an organism is biologically male or female are called

• autotrophs

• autosomes

• sex chromosomes

• sex-linked traits

Multiple Choice

Identify the substitution mutation that results in an abnormally shaped protein and that causes a reduced ability to bind and transport oxygen.

• Cystic fibrosis

• Sickle cell anemia

• Huntington's

• Hemophilia

Multiple Choice

What disease is characterized by abnormally shaped red blood cells?

• hemophilia
• sickle cell anemia
• phenylketonuria
• Huntington's 

Multiple Choice

This karyotype was taken from a  ________.

• normal female
• female with Down's syndrome
• female with Turner's syndrome
• male with Turner's syndrome

Multiple Choice

This karyotype was taken from a  _________.

• male with Turner's syndrome
• male with Klinefelter's syndrome
• female with Klinefelter's syndrome
• male with Down's syndrome