UNIT 15: GENETICS - Quizs

Probability in genetics is expressed in __________.

• equations

• fractions

• percentages

• whole numbers

Multipart: Read the following information, then use it to answer the question:

“Free earlobes” (E) are dominant over “attached earlobes” (e). The father is heterozygous for the type of ears he has while the mother is homozygous recessive. 16.

What is the probability that a child will have attached earlobes?

• 0%

• 25%

• 50%

On a Punnett square two capital letters indicate a gene which is__________.

• homozygous dominant

• homozygous recessive

• heterozygous

• none of the above

Describe the relationship between chromosomes, DNA, genes and traits.

• Chromosomes contain DNA, which is organized into genes. Genes determine traits.

• Genes contain chromosomes, which are made up of traits. DNA determines chromosomes.

• Traits are made up of genes, which are organized into chromosomes. DNA determines genes.

• DNA contains chromosomes, which are made up of traits. Genes organize DNA.

Multipart: Read the following information, then use it to answer the question:

“Free earlobes” (E) are dominant over “attached earlobes” (e). The father is heterozygous for the type of ears he has while the mother is homozygous recessive. 16. What is the probability that a child will have attached earlobes?

• 0%

• 25%

• 50%

• 75%

Genetics is the study of ___________.

• body systems

• cell division

• heredity

• sexual reproduction

14. The relationship between chromosomes, DNA, genes, and traits is that:

• Chromosomes contain DNA, which contains genes that determine traits.

• Genes are made of chromosomes, which are made of traits and DNA.

• Traits are made of DNA, which is made of chromosomes and genes.

• DNA is a trait that contains chromosomes and genes.

On a Punnett square two capital letters indicate a gene which is__________.

• homozygous dominant

• homozygous recessive

• heterozygous

• none of the above

Genetic variation occurs in what type of reproduction?

• asexual

• sexual

• both

• neither

Genetic variation occurs in what type of reproduction?

• asexual

• sexual

• both

• neither