Question |
Answer |
Heterozygous (hybrid) |
has both dominant and recessive allele. ALWAYS has DOMINATE phenotype. |
homozygous (purebred) |
same alleles (dominant or recessive). ex. RR or rr |
dominant allele |
capital (big) allele represents dominant trait. |
recessive allele |
lowercase (small) allele represents recessive trait. hides if dominant allele is present. |
Base pair rules of DNA sequencing |
Cytosine (c) goes with Guanine (g). Adenine (a) goes with Thymine (T). |
Base pair rules of RNA |
Cytosine (c) goes with Guanine (g). Adenine (a) goes with Uracil (u). NO THYMINE! |
What controls the production of proteins? |
genes control the production of proteins. |
genotypes |
letter combination of the alleles. for example, BB, Bb, or bb |
phenotypes |
the form of the trait that an organism displays or looks like. for example, tall or short, purple or white, smooth or wrinkled. |
shape of DNA molecule |
double helix |
punnet square |
a tool used to show all the possible gene combinations from both parents. |
What is a trait? |
a characteristic that an organism can pass to its offspring. |
Who is the father of genetics? |
Gregor Mendel |
What makes up the proteins in our cells? |
20 amino acids |
What two molecules make up the sides of the DNA ladder? |
sugar and phosphate |
How many alleles do each sex cells give? |
1 (from both female and male) |
What is the study of genetics? |
Heredity |
Which pair of chromosomes make a male offspring? |
xy |
Which parent's genes decides if a human baby will be boy or girl? |
Father because he can give xy. Mother can only give xx. |