DNA
Humans have this number of chromosomes.
46
This produces body cells.
mitosis
When a trait is homozygous recessive, which trait is shown?
recessive
Which trait is always shown in an organism if it is present - dominant or recessive?
dominant
Name a trait of an oak tree.
True or False - Your number of chromosomes is what makes you different from another human.
False
The number of chromosomes humans get from EACH parent.
23
What is the mathematical ratio used to determine genetic outcomes?
probability
Each parent contributes how many genes for each trait in the offspring?
1
Tightly packed DNA is called a ____.
chromosome
What are the changes that occur during replication called?
mutations
Male reproductive cells are called what?
sperm
Genotypes are written using what?
uppercase and lowercase letters
Phenotypes can be influences by which three things?
environment, mutation, genotype
What is the genotype of a female in the pedigree where in the square there is Cc and in the circle there is CC?
CC - homozygous dominant
What is a segment of DNA called?
gene
This type of cell division produces 4 haploid cells.
meiosis
If you have one parent that is homozygous recessive and the other is homozygous dominant, what genotype with their offspring be?
hybrid or heterozygous
The study of heredity, how genes are passed from one generation to the next, is called this.
genetics
In a Punnett Square, a capital letter stands for what type of allele?
dominant
DNA is found in what part of the cell?
nucleous
Parents pass their traits down to their offspring through these cells.
reproductive cells
Mendel concluded that how many genes control each inherited trait?
2
How many recessive traits need to be present to observe the recessive trait?
2 homozygous recessive
George has two pet rabbits with black fur. When his rabbits mated, one of their four offspring had white fur, and other three had black fur. Which is most likely true for George's rabbits?
both parents are heterzygous for black fur