Unit 1 Review: Reproduction and Human Development Flashcards
What happens during metaphase of mitosis?
Chromosomes align at the cell’s metaphase plate.
What is the main purpose of mitosis?
To grow and repair the body.
What is the outcome of mitosis?
Two genetically identical diploid cells.
Which type of reproduction involves the development of offspring from unfertilized eggs?
Parthenogenesis.
What type of asexual reproduction involves a parent growing an extra piece on its body and then it falling off to create a new individual?
Budding.
When one worm is cut in half, it grows into two separate worms. What type of reproduction is this?
Fragmentation.
During which phase of meiosis does crossing over occur?
Prophase 1.
What is the purpose of meiosis?
To create gametes.
What is the outcome of meiosis?
Four genetically unique haploid cells.
What is a potential result of a nondisjunction in meiosis?
Chromosomal abnormalities.
Which structure produces sperm?
Testes.
What is the function of the epididymis?
To store and mature sperm.
Which gland releases fluid to prepare the urethra for ejaculation?
Bulbourethral.
Where does fertilization occur?
Oviduct.
Which structure is responsible for producing eggs?
Ovary.
Where does sex hormone production begin in both males and females?
Hypothalamus.
What is the term for different variations of the same gene?
Alleles.
What does genotype represent?
The genetic makeup of an organism.
What event marks the beginning of the first trimester?
Implantation of the blastocyst in the uterus.
Which of the following structures develop first in the embryo?
The brain and spinal cord.
The heart begins to beat in which semester?
First.
What is the main event in trimester 2?
The bones begin to harden.
What is the main focus of fetal development during the third trimester?
Growth and preparing for birth.
Which organ is the last to develop?
Lungs
