Test 6 Flashcards
Pedi
Beginning, child
Para
Beside, near
Pes, pedis, pod
Foot
Photo, phos, phot
Light
Post
After, behind
Semi
Half
Skleros
Hard
Soma
Body
Sub, sup
Below, under, smaller than
Super
Above, upper
Supra
Above, upon
Heredity
Parents passing traits to their children
Genetics
Type of biology that studies hereditary
Cross-pollination
Transfer of pollen from one plant to another plant
Purebred
Something that has been bred from a group of organisms all with the same traits
Trait
Characteristic that a living thing can pass on to its children
Gene
DNA that codes for a protein
Recessive
a gene that is only shown when it becomes homozygous
Segregation
the separation of alleles during gamete formation
Punnett square
Chart showing the possible combinations of genes
Gamete
reproductive cell involved in sexual reproduction
Phenotype
Physical characteristics of an of an organism
Genotype
Genetic makeup of an organism
Probability
Likeliness that a certain event will happen
Diploid
cell that contains a double set of chromosomes
haploid
Cell that contains a single set of chromosomes
Independent assortment
Heredity genes that are segregated independently
Autosome
asexual chromosome
Chromosomal mutation
Change in the number or structure of chromosomes in a cell
Codominance
Condition in which both alleles of a gene are expressed
Frameshift mutation
addition or deletion that changes every codon from the point on
Gene mutation
Change involving the nucleotides of DNA
Inducer
Chemical substance that causes the production of enzymes
Intron
DNA that doesn’t code for protein
Linkage group
Genes that are inherited in a group
Linked genes
Genes that are inherited together and do not undergo independent assortment
Mutation
Change in the emetic material of a cell
Nondisjunction
Things that can happen to chromosomes causing mutations
Polygenic trait
Trait that is controlled by a number of genes
Point mutation
Gene mutation that affects a single nucleotide
Recombinant
Individual organism with new combinations of genes
Repressor
Special protein that binds to the operator and turns off the operon
Sex chromosome
Chromosome that is different in males and females
Sex linked
trait that is determined by a gene located on one of the sex chromosomes
X chromosome
A sex chromosome;females have 2 and males have 1
Y chromosomes
Male sex chromosome
The 2n number of chromosomes is also called the _______ number.
Diploid
The n number of chromosomes is also called the _______ number.
Haploid
Sexual reproduction involves specialized sex cells called _______.
Gametes
What is accomplished by meiotic cell division?
Production of gametes
Eggs are produced by a type of gametogenesis called _______.
Oogenesis
The ovum is larger than the polar bodies because it contains a greater amount of ______.
Food/cytoplasm
In Mendel’s experiments, he crossed pea plants with green pods with plants with yellow pods. He found that all the offspring had green pods. The plants used in the original cross are members of the ______ generation. The offspring of the cross make up the _______ filial, or _______ generation.
P or P1
First
F1
Anemia
Results from a lack of oxygen to the cells
Red blood cell
Carries oxygen
4.5-5.5 million on average in a human body
Capillary
Microscopic blood vessel
Malaria
Kills red blood cells
Sickle cell anemia
Genetic trait that makes it so you can’t have malaria
The physical appearance of an individual is it’s _______, while the genetic makeup of an individual is its ________.
Phenotype
Genotype
In guinea pigs, black coat color is dominant over white. How would you find out whether a black guinea pig is homozygous for coat color or heterozygous?
Test cross
The units of heredity, which are called _______, are located on the ______.
Genes
Chromosomes
Under what circumstances are genes inherited together?
Genes that are present on the same chromosome
The failure of homologous chromosomes to separate during meiosis is called _______.
Nondisjunction
Polyploidy
Where a cell has double the haploid number of chromosomes
Two sex-linked traits in humans are ________ and _________.
Hemophilia and color blindness
What Are multiple alleles?
Traits that have more than two genes
Two traits in humans that are determined by multiple alleles are _______ and _______.
Blood type
Eye color
Changes in chromosomes of body cells are called ________ mutations
Somatic
Changes in the chromosomes of gametes are called _______.
Germinal
Name four types of nondisjunction
Translocation, inversions, duplication and deletion
The condition in which the cells of an organism have more than twice the haploid number of chromosomes is called _______.
Polyploidy
Homozygous
Similar chromosomes
Heterosis
Successful genotype
Allele
Matching traits
Self pollination
When plants pollinate themselves
Dominant
Trait that is expressed
Incomplete dominance
Both traits are the. Same as blending inheritance
Mitosis list
Cell division Asexual Diploid-->diploid Body cells No variation
Crossing over
Where chromosomes exchange parts
4 things that increase the frequency of getting a mutation
Radiation
Virus
Drugs
Inbreeding
Meiosis list
Reduction division Sexual Diploid-->haploid Sex cells Variation
Where is hemoglobin found?
RBC
Chemically, what is hemoglobin?
Composed of 600 amino acids, protein, and pigment
What is the function of the hemoglobin?
Transports oxygen
How does the abnormal hemoglobin found in sickles red blood cells differ from normal hemoglobins?
Change in one of the amino acids
Explain how sickle cell anemia can cause death.
Clogs up blood vessels
How might it be possible to check one’s phenotype for sickle cell anemia?
Examine blood under a microscope
Explain the relationship between an allele and a gene.
A gene is made up of alleles
What kind of cells are produced in meiosis?
Gametes
Where does mitosis occur?
Body cells
What is the main function of the process of mitosis?
Genetic continuity
How many cells are produced in mitosis?
2
How many cells are produced in meiosis?
Four
What is the main function of the process of meiosis?
Genetic continuity and variation
What kind of cells are produced in mitosis?
Body cells
A haploid chromosome number of daughter cells are produced during which process?
Meiosis
What is the chromosome number of the parent cell during mitosis?
2n
What is the chromosome number of the parent cell during meiosis?
2n
Where does meiosis occur?
Reproductive glands
Where does meiosis occur in males?
Primary spermatocyte
Where does meiosis occur in females?
Primary oocyte
How many cells do males produce in meiosis?
4
How many cells do females produce in meiosis?
1
What size are the cells males produce in meiosis?
Small
What size are the cells females produce in meiosis?
Large
3 sex linked disorders
Hemophilia
Duchenes muscular dystrophy
Color blindness
4 autosome disorders
Hay-wells disorder
Acropetoral syndrome
Huntingtons disease
Jackson-wells syndrome
4 sex chromosome disorders
Klienfelters syndrome
Turners syndrome
XX male syndrome
Down’s syndrome