BIO Flashcards
Female parts of a flower
Stigma, Style, Ovary, Ovule, Pistil
Male parts of a flower
Anther, Filiment, Stamen
2 Non gender parts of a flower
Petal, Sepal
fertilization Definition
The act of fertilizing an egg {1st step}
Zygote Definition
When Sperm comes into contact with the egg {2nd step}
Embryo Definition
Unborn Offspring {3rd step}
Mitosis Definition
a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.
Meiosis Definition
a type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell
steps of pollination
Pollination, germination, penetration of the ovule, fertilization.
{poll, germ, penetration of the ovule, fert.}
sexual reproduction Definition
2 parents, 2 sexes make offspring
Asexual reproduction Definition
one parent make a copy of themselfs as a offspring
advantages and disadvantages of Sexual reproduction
Advantages: Variation
Disadvantages: more time, more energy
advantages and disadvantages of Asexual reproduction
Advantages: less time, less energy
Disadvantages: No Variation
types of asexual reproduction
biannary fission, budding, spores
bacterial conjugation
the process by which one bacterium transfers genetic material to another through a bridge like connection
discrete variation
Characteristics controlled by a single gene (one copy inherited from each parent) tend to have phenotypes that fall into separate categories.
continuous variation
variation in phenotypic traits such as body weight or height in which a series of types are distributed on a continuum rather than grouped into discrete categories.
dominant traits
the inheritance of traits that are typically passed vertically from parent to child where both the parent and the child are affected by the trait or disorder that is related to that gene.{RR}
recessive traits
A recessive trait is one that is only expressed when an organism has two recessive alleles for that trait. {rr}
What are examples of mutagens
something that changes a organisms DNA {ultraviolet light, X-ray, tobacco products, radioactive substances
What does DNA stand for?
Deoxyribonucleic Acid
What is DNA
the material that carries all the information about how a living thing will look and function
heterozygous
having different alleles for a particular trait.
homozygous
having inherited the same versions (alleles) of a genomic marker from each biological parent.
heritable traits
Eye Color, Hair color, hikers thumb
non-heritable characteristics
Manners, Likes and dislikes
natural selection
The evolution of a organism adapting to Survive in their enviorment
artificial selection
Humans breeding plants and animals due to their likingness
