Biology Final

In sexual reproduction, a new organism is produced when ______.

• body cells divide by mitosis

• sex cells, sperm and egg, come together

• an organism divides into two equal parts

Which of the following is a trait that you probably inherited?

• your taste in clothing

• your favorite music

• your eye color

The combination Tt represents a ___ genotype, where T means ___, and t means ___.

• heterozygous; dominant; recessive

• homozygous; dominant; recessive

• sex-linked; recessive; dominant

DNA is a double helix which means that it is shaped like a __________.

• blob of snot

• a stool

• a spiral staircase or twisted ladder

What would the complementary strand of DNA be for the sequence of bases ACCTAGTTG?

• GTTCGACCA

• TGGATCAAC

• ACCTAGTTG

In our activity where you made a baby, who determined the sex of the offspring and why?

• The female because she carries the baby.

• The male, because he’s big and strong

• The male because he carries both X and Y chromosomes

____________makes two identical body cells, while ___________ makes sex cells like the sperm and egg.

• Cloning; Hybridization

• Inbreeding; selective breeding

• Mitosis; Meiosis

If the body cells in an organism have 10 chromosomes, then the sex cells produced during meiosis would have _____ chromosomes.

• 20

• 15

• 5

A strange disorder causing fingers to sprout out of one’s face is discovered to be dominant. A heterozygous female marries a heterozygous male. What percentage of the offspring will have fingers sprouting out of their face?

• 50%

• 75%

• 100%

Dimples are dominant to no dimples. Ben’s mom is heterozygous for dimples and his dad is homozygous dominant for the trait. What genotypes can result from the cross of Ben’s parents?

• DD, dd

• DD, Dd

• DD, Dd, dd