Unit 4 Genetics Review

Which answer best describes sexual reproduction?

• offspring are identical to the parents

• offspring come from one parent

• offspring come from two parents

• offspring have twice as much DNA as their parents

Which of the following best describes asexual reproduction?

• offspring is identical to one parent

• sperm fertilizes the egg

• offspring is a combination of two parents

• offspring is genetically unique

Which statement correctly shows how genes and chromosomes are related?

• chromosomes are made of DNA, but genes are not

• chromosomes are found on genes

• genes are located inside the nucleus and chromosomes are not

• genes are found on chromosomes

How many chromosomes do humans have?

• 23

• 32

• 46

• 3,000

This involves one parent and the offspring is identical to the parent

• asexual reproduction

• chromosomes

• genes

• sexual reproduction

How a trait is physically expressed is called a _______

• phenotype

• genotype

• trait

• characteristic

The different forms of a trait that a gene may have are called ___________

• short

• tall

• alleles

• characters

This involves 2 parents and combines their genetic material to produce a new, different organism

• asexual reproduction

• chromosomes

• genes

• sexual reproduction

The passing of genetic instructions from one generation to the next is called _________

• genetics

• traits

• reproduction

• heredity

Chromosomes are found in the ____________ of the cell

• Chloroplast
• Nucleus
• Cytoplasm
• Mitochondria