Ch 6 Flashcards
WHat is a somatic cell?
Any cell in a multicellular organism except sperm or egg cells.
What is cloning?
A group of genetically identical individuals.
Where the center of the chromosomes attach is known as?
Centromere
How many chromosomes are in a human somatic cell and what do we call that?
46 DIPLOID
What is loosely wrapped DNA?
Chromatin
When the DNA has yet to split but is in its x formation it is known as what?
Sister Chromatids
How many chromosomes in a gamete human cell?
23 HAPLOID
What is a non reproductive cell called?
Somatic
What is a tightly wrapped DNA?
Chromasome
Non dividing cells have DNA in what form?
chromatin
WHat does ploidy mean?
Refers to number of chromosomes either diploid or haploid
What is Budding in reference to asexual reproduction?
The formation of a new organism by the protrusion of part of another organism. Has same genetic info as parent but was essentially PINCHED OFF.
WHat are the gene carrying structures found in the nucleus of eukaryotic cells?
Chromosomes
3 TYPES of Cellular Division?
Binary Fission
Mitosis
Meiosis
What is amplexus?
When the man latches on
The production of offspring that are exact copies of the parent is known as what?>
Asexual Reproduction.
What are homologous chromosomes?
Very similar but dont carry identical information. carry same genes but different alleles/
What is the first thing a dividing cell do?
Make a copy of its DNA
What is pathenogenisis?
occurs in females where growth and development of embryos or seeds occurs without fertilization by males.
Alternative version of genes?
Alleles
3 functions of Cellular Division?
- Reproduction
- Growth and development
- TIssue Renewal
The discrete unit of heridity info consistin of a specific nucleotide sequence in DNA.
Genes
How are cancer cells different from normal cells?
1 Divide when they should not.
2 Invade surrounding tissues
3 Can move to other locations
WHat are BRCA1 and BRCA2?
Genes that, when working properly help prevent the formastion of tumors by producing proteins that maintain DNA function.
How does binary fission work in asexual reproduction?
The organism splits directly into to equal offspring, each with a copy of the original DNA.
What is a gamete?
a reproductive cell like sperm or egg
What is an egg or sperm cell called?
A gamete?
