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Biology 1st Semester

Across
The X chromosome is ___ than the Y
Chromosomes become visible
Well tested explanation
Gene that only expresses when it is homozygous
Substance with a pH greater than 7
Cell with one of each type of chromosome
Made of DNA and proteins
Atomic particle with a negative charge
Consists of carbon, hydrogen, and oxygen
Convert chemical energy into compounds used by the cell
These acids are the building blocks of DNA
Atomic particle that determines the type of atom
Bond in which electrons are shared
All living things are made of ___
Bond in which electrons are transferred
Picture of chromosomes
At the end of mitosis, there are ____ daughter cells
Regulate the timing of the cell cycle
Down
Study of heredity
He was the first person to use the term "cell"
Substance with a pH less than 7
Plants studied by Mendel
Chromosomes lined up in the middle of the cell
Follows anaphase
Protein that carries oxygen in the blood
At the end of meiosis, there are ____ daughter cells
Point of attachment for sister chromatids
Number of ideal variables
Organelles with chlorophyl
Contains most a a cell's DNA
These acids are the building blocks of proteins
"Father" of genetics
Places where proteins are assembled
Differing numbers of these make isotopes
The ____ and species are used in scientific names
Gene that expresses itself over another gene
Study of classification