Science Exam Flashcards
(29 cards)
Dominant genes are what?
Genes that always show up
What are recessive traits?
Recessive traits fade away once a dominant trait kicks in
What is a gene?
A gene is a piece of DNA that gives instructions to your body; works in pairs
An allele is…
A different version of a gene
Genotype is the…
Type of gene genes you got from your parents
The phenotype is the _________________.
Physical features
Incomplete dominance is what?
Incomplete dominance is when neither gene has complete dominance; blended offspring
DNA-
Carries the genetic information in your body’s cells
Reproduction is what?
Cells dividing to pass on genes
Asexual reproduction requires how many parents?
One
Homo means…
Same
Hero means…
Different
What does binary fission do?
Splits an organism in two. Bi means two.
Budding-
When an adult organism has little copy’s of itself stuck to ifs side until it is large enough to go on its own.
Vegetative reproduction, what is it?
A piece of an plant grows into a new plant. (Clone)
What is an advantage of asexual reproduction?
Quick, traits always pass on to the next generation, no partners, all reproductive
What is a disadvantage of asexual reproduction?
Can not survive when environment changes.
Spores-
Very tough single cell that can grow into a whole new organism.
What do spores grow into?
A whole new organism
Fertilization is when both parents combine and create a ________.
Zygote
Reproduction is….
Cells dividing to pass on genes
Binary Fission?
Bacteria divides into two identical bacteria
Sexual reproduction?
Two parents give DNA to the offspring and the offspring is unique.
__________ is the dividing of the genetic material in the nucleus.
Mitosis
