Growth & Development
embryo
Term for a baby in its mothers womb during the first 2 months of life
The passing on of traits from parents to children is called ________.
heredity
Process in which a cell divides to produce two identical cells
mitosis
__________________ genes are displayed with an uppercase letter, while ___________________ are displayed with a lowercase letter.
Dominant ; recessive
What is the fluid filled bag in which the embryo lives?
amniotic sac
_________________ are male or female reproductive cells that combine to produce a single cell, which develops into a new life
gametes
Special cell division process that results in unique cells called gametes, which have half the number of chromosomes
meiosis
What is the difference between dominant genes and recessive genes?
Dominant genes always determines a trait, regardless of what trait the corresponding gene encodes; recessive genes will not show a trait unless both parents pass it on.
What is a fetus?
Term for a baby in its mothers womb after the first 2 months of life
46
In which stage of mitosis do the sister chromatids line up in the middle of the cell?
metaphase
Choose the words that make the following sentence correct. (You must get both correct to receive the points!)
(Genotype / Phenotype) refers to which genes are present in a persons DNA, while (genotype / phenotype) refers to which traits are physically expressed.
genotype ; phenotype
Which word makes the following sentence correct?
"Environment" refers to (internal / external) factors that affect growth and development.
external (Ex:diet, exercise, etc)
What are genes?
Parts of the DNA that determine certain characteristics or traits.
In which phase of the cell cycle is DNA copied?
interphase
Brown hair (B) is a dominant trait, while blonde hair (b) is a recessive trait. If a person with blonde hair (bb) marries a person who has brown hair (BB), what percent chance does their child have of having blonde hair?
0%. Both parents must pass on a recessive allele for the gene to be expressed!