Human Fertilization and Development

The process of joining of a sperm cell and an egg cell is called...

• Fertilization

• Labor

• Zygote

• meiosis

What percentage of chromosomes are handed down by a sperm cell to the zygote during fertilization?

• 75%

• 25%

• 50%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Human reproduction is a type of Sexual reproduction because _____

• it results to identical offspring from parent cells

• it results to genes/chromosomes different from parent cells

• it requires the combination of gametes from both parent cells

• it requires one parent cell to reproduce

What is an advantage of sexual reproduction?

• Allows genetic variation

• Only needs one parent

• less chance of adaptation

• Offspring are exact copies of parent

Tags

NGSS.MS-LS3-2

The continued growth of embryo inside the uterus is a result of

• meiosis

• fertilization

• mitosis

• diffusion

Tags

NGSS.HS-LS1-4

A dog has 78 chromosomes in its body cells. What is the diploid number? (vocab: diploid -means combined chromosomes from sperm and egg cells- called diploid)

• 78

• 39

• 1

• 156

A Goat has 60 chromosomes in its body cells. What is the haploid number? (vocab: haploid means chromosome number found in sex cells)

• 60

• 30

• 1

• 120

Placenta develops in the uterus. Identify which statement least likely serves the function of placenta?

• provides oxygen and energy

• provides hormones and white blood cells

• provides food and nutrients

• releases wastes such as carbon dioxide

Offspring that results from meiosis and fertilization each have

• twice as many chromosomes as their parents

• one-half as many chromosomes as their parent cells

• gene combinations different from each of the parent

• gene combinations identical to those of each parent

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which developmental process is represented by the diagram?

• fertilization

• meiosis

• mutation

• differentiation

Tags

NGSS.HS-LS1-4