DNA
What are the four kinds of bases found in DNA?
Adenine, Guanine, cytosine and thymine
Number chromosomes in human cells
46 chromosomes
What are the three main types of RNA?
messenger RNA, ribosomal RNA and transfer RNA
What are mutations?
Mutations are changes in the genetic material
An expressed gene is one that:
transcribed into RNA
what is a visual tool for following a trait through a generation?
Pedigree
What type of inheritance determines eye color?
polygenic
The process by why RNA molecules are produced by copying part of the nucleotide sequence of DNA into a complementary sequence in RNA.
Transcription
What are two kinds of mutations?
Gene mutations and chromosomal mutations
If there is a pink flower
Multiple alleles
What did scientists investigated genetics through studying the DNA?
Watson, Crick and Mendel
bases of the DNA structure
Nitrogen
Which of the following is a homozygous recessive trait?
TT Tt tt or TTT
tt
Forms of mutation (3)
Substitution, Insertions or deletions
If two cats are black but they have four offspring with white fur and three with black fur. The parents genotype would be
heterozygous for white fur
What is the overall structure of the DNA molecule?
DNA is a long molecule made up of units called nucleotides
The process by why the DNA molecule separates into two strands, then produces two new complementary strands
Replication
During replication, which sequence of nucleotides would bond with the DNA sequence ATACTG
TATGAC
What is NOT a trait Mendel recorded?
length of leaf
What has multiple alleles?
Blood type
Nucleotides has three parts:
deoxyribose molecule, a phosphate group and a nitrogenous base
Mendel thought purple was the only factor seen because
it blocked the recessive, or it was dominate.
What are the three differences between RNA and DNA?
The sugar in RNA is ribose instead of deoxyribose, RNA is generally single-stranded, and RNA contains uracil in place of thymine.
Exposure to radiation, x-rays and neon lights
External mutation
Recessive Genetic disorder
cystic fibrosis