Erin Science ch 2
Terms
undefined, object
copy deck
- A term that applies to an organism whose body shape,form,or characteristics change during it's lifecycle...
- metamorphosis
- In humans, hair color is an example of an____?
- inherited trait
- The process which reduces the number of chromosomes in certain cells is called _____?
- meiosis
- An organism in the adult stage of its ____ is able to reproduce.
- life cycle
- The offspring of some animals are just like the adult, except for size. This is an example of ____?
- direct development
- During _____, duplicated ____ in the cell's nucleus seperate, and the cell pinches into two cells.
- mitosis ---chromosomes
- In order for a _____ to be seen , an offspring must receive a factor for the trait from each parent.
- recessive trait
- In order for a ____ to be seen, an offspring needs to recieve a factor from only one parent.
- dominant trait
- A ____ carries the DNA code for a particular trait.
- gene
- Reproduction without the joining of cells from the female parent and the male parent is called ____.
- asexual reproduction
- Reproduction in which cells from two parents unite to from a zygote is called ____.
- sexual reproduction
- Genes are structures on chromosomes in a cell's ____.
- nucleus
- Neuclius controls a cell's shape and ____?
- function
- Genes tell a cell when to begin ____.
- mitosis
- In order for a new cell to function just like its parent cell, it must recieve an exact copy of it's parent cell's ____?
- chromosomes
- Your bones and muscles grow larger as a result of ____
- mitosis
-
what does NOT happen during mitosis?
A. The chromosomes duplicate
B. A spindle fiber forms
C. The number of chromosomes is halved
D. The nuclear membrane disappears - C. The number of chromosomes is halved
-
All the traits that parents pass to their offspring are called ___
F. recessive trait H. physical traits
G. dominant traits J. inherited trait - J. inherited traits
-
If an offspring recieves two genes, one from each parent, for a particular recessive trait , that trait will ____
A. Be seen C. be seen half way
B. Not be seen D.none of the above - A. be seen
-
Which sequence illustrates incomplete metamorphosis?
F. egg, larva,pulpa,butterfly
G. kitten , cat
H. egg, numph, adult
J.young racoon, adult racoon - H. egg, numph, adult
-
When meiosis occours, the number of chromosomes____
A. is doubled C. stays the same
B. is halved D. is tripled - B. is halved