Study science genetics-2 Flash Cards

 
Pile Management Card
science genetics-2

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A tool for tracing a trait through generations of a family is called _______________.
pedigree
After meiosis, how many chromosomes does each new cell have?
Each new cell will half 1/2 the number of chromosomes of the original cell.
During ________, chromosomes are copied once, and then the nucleus divides twice.
meiosis
During ____________, chromosomes are copied once and the nucleus divides once.
mitosis
Forms around each new cell during meiosis.
cell membrane
The process in which the nucleus divides only once is called ____________.
mitosis.
An exact duplicate of a chromasome is called _______________.
chromatid.
How chromosomes look before meiosis
threadlike
A tool used to visualize all the possible combinations of alleles from parents is called ___________.
Punnett square
When a sex cell divides, what is the result?
This results in a sperm or egg with half the number of chromosomes of the original cell.
Sutton proposed that _____________ are located on chromosomes.
genes
Walter Sutton observed that chromosomes of the eggs and sperm are located in the ___________________.
nucleus
In humans, how many chromosomes does a sperm cell have?
23
In humans, how many chromosomes does an egg cell have?
23
In humans, when a new cell is formed from a sperm and egg cell, how many chromosomes does it have?
46
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