Shared Flashcard Set

Details

Multicellular Life review
Langham creek Biology review Multicellular life Unit
20
Biology
9th Grade
02/12/2015

Additional Biology Flashcards

 


 

Cards

Term
Mitosis is the process of division in A_____ (body cells) cells.  It results in B_____(identical or different) diploid (2N) cells.
Definition

[image]

A. Somatic

B.  identical

Term
If there are 46 chromosomes in a human red blood cell, how many chromosomes will be present in the new cells after mitosis takes place?
Definition
[image]46
Term
Meiosis is the process of division to create A_____ (sex cells).  It results in 4 genetically B______ (identical or different) haploid (1N) cells.
Definition

[image]

A) gametes

B) different

Term
How many chromosomes will be present in the new human sperm cells after meiosis takes place?
Definition
23
Term
Name 3 important differences between mitosis and meiosis.
Definition

1.  Mitosis- divided from somatic cell, Meiosis- divided from sex cell

2. Mitosis - makes 2 daughter cells, Meiosis makes 4 daughter cells

3.  All Mitosis- all daughter cells have 46 chromosomes, Meiosis- all daughter cells have 23 chromosomes

Term
What is crossing over?
Definition

It is the process in which homologous chromosomes exchange portions of their chromatids during meiosis.

[image]

Term
When does crossing over occur in meiosis?
Definition
Prophase 1
Term
What is the significance of this process (crossing over)?
Definition
Crossing over therefore produces new combinations of alleles in the cell.
Term
What is independent assortment?
Definition

[image]

one of Mendel's principles that states that genes for different traits can segregate independently during the formation of gametes.

Term
When does independent assortment occur in meiosis?
Definition
Anaphase 1
Term
What is the significance of independent assortment?
Definition
It  gives different traits an equal opportunity of occurring together.It produces genetic variation
Term
What is the difference between genotype and phenotype?
Definition
Genotype is the genetic code and phenotype is what physical trait you see from the code.
Term
What is phenotype?
Definition
It is the physical traits expressed by the organism.
Term
What is genotype?
Definition
Genetic makeup of an organism; it's the alleles an organism inherits from each parent.
Term
What is codominance? draw punnett square example
Definition

All forms of a gene are phenotypically expressed.  use punnett square example

[image]

Term
What is incomplete dominance? give example
Definition

Blending of traits expressed as a third phenotype- one trait is not completely dominant over the other. neither genotype is dominant.  Neither red or white is dominant.

[image]

Term
A_____ is the abnormal growth of cells and can result in a large mass called a B______
Definition

A.  Cancer

B.  Tumor

Term

Give the levels of organization (have to know them in order)

1

2

3

4

5

6

7

8

Definition

1. Atom

2. Molecules

3. Organelles

4. Cells

5. Tissue

6. Organ

7. Organ system

8. Organism

Term

Dihybrid cross

TtBb x TtBb

(draw a punnett square and give Genotypic and Phenotypic ratio)

Definition
[image]
Term

complete colorblind punnett square

XBXb with XBY

Definition
[image]
Supporting users have an ad free experience!