U4 Quiz 1: Genetics of Skin Color

• INCREASES GENETIC VARIATION

• TAKES PLACE IN PROPHASE I

• CROSSING OVER

• ALL ARE TRUE

"The Great White Shark was 20 feet in length.  Phenotype or Genotype?

• phenotype
• genotype

Who would be most at risk of developing rickets, a bone disease caused by insufficient calcium absorption?

• Children born to mothers with dark skin living far from the equator.

• Adults with dark skin who live close to the equator.

• Children born to mothers with light skin, living close to the equator.

• Adults with light skin who live close to the equator.

• Anyone who eats a diet that includes a lot of fish

A male shark has 40 chromosomes in each of its sex cells. How many would be present in its body cells?

• 20
• 40
• 80
• 160

Chromosomes that are organized in pairs, are the same size, and have the same genes are called _______ chromosomes.

• homeostasis

• homologous

• matching

• sister

What is the evolutionary benefit for dark skin near the equator?

• Skin cancer protection
• Folate Protection
• It has no evolutionary relationship
• Easier vitamin D production

________ is when nature determines which animals reproduce.  Also known as "survival of the fittest."

• Allele
• Commercial
• Heredity
• Natural Selection

If a portion of original DNA is ATTCGA, what will the complimentary strand be?

• TAAGCT

• ATTCGA

• TATTCG

• CGATTA

Blue eyes

• Genotype

• Phenotype

The 2 exact copies of DNA in a chromosome are called ________.

• chromatids

• genes

• mutations

• pathogens