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10Science Psych, Bio, Chem & Phys


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10Science Psych, Bio, Chem & Phys


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Creado por:
Rahil Mehta


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[Front]


What are 2 types of cell division in animals?
[Back]


Mitosis and Meiosis.

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10Science Psych, Bio, Chem & Phys - Detalles

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Preguntas:

231 preguntas
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How many chromosomes do diploid cells have?
46 chromosomes each (23 pairs)
Why does Meiosis produce 4 daughter cells?
Because there are 2 divisions
What are the 6 stages of Mitosis?
Interphase, Prophase, Metaphase, Anaphase, Telophase, Cytokinesis
What happens during prophase?
A cells genetic DNA condenses
What happens in the interphase?
The cell separates its DNA into two sets and divides its cytoplasm, forming two new cells.
What happens during Metaphase?
The duplicated chromosomes line up and spindle fibers connect to the centromeres.
What happens in the prophase?
The cell breaks down some structures and builds others up, setting the stage for division of the chromosomes and the chromosomes begin condensing.
What happens during Anaphase?
Sister chromatids separate and move toward the centrioles.
What happens in telophase?
Chromosomes begin to unwind and the nuclear envelope reforms.
What happens during Cytokinesis in animal cells?
The cell membrane draws in and pinches off.
What happens during Cytokinesis in plant cells?
A cell plate forms followed by a new cell membrane
What type of cell division does the image depict?
The graph depicts the process of meiosis. The amount of DNA in each nucleus at the conclusion of the process is half of the amount of DNA that was present in the parent cell prior to DNA replication.
What happens in Prophase II?
Chromosomes condense and the nuclear envelope breaks down, if needed. The centrosomes move apart, the spindle forms between them, and the spindle microtubules begin to capture chromosomes.
What happens in Metaphase II?
The chromosomes condense and become distinguishable as they align along the metaphase plate through the facilitation of the spindle fibers in the center of the dividing cell.
What happens in Anaphase II?
The stage when sister chromatids of every chromosome separate and begin to move towards the opposite ends of the cell
What happens in Telophase II?
Nuclear membranes form around each set of chromosomes, and the chromosomes decondense.
What happens in the final stage of meiosis?
Cytokinesis splits the chromosome sets into new cells, forming the final products of meiosis: four haploid cells in which each chromosome has just one chromatid.
What type of diagram is this?
It is a Bohr Diagram.
How many chromosomes do diploid cells have?
46 chromosomes each (23 pairs).
Why does Meiosis produce 4 daughter cells?
Because there are 2 divisions.
What are genetics?
The study of how traits are passed from parent to offspring
Why can't a red-head be heterozygous for the condition?
Because a recessive allele will only be expressed in an individual if they have a homozygous genotype.
What are the 4 types of inheritance?
Simple Inheritance; Incomplete Inheritance; Co-Domination; Sex-linked Inheritance.
What is the full form of DNA
Deoxyribonucleic Acid
What are the 'rungs' of DNA made up of?
The 4 nitrogen bases: Adenine (A), Thymine (T), Guanine (G), and Cytosine (C).
Where are chromosomes located?
In the nucleus of a cell.
Where are genes located?
On the chromosomes.
Why would you expect half the children born in the world to be female?
Because there is a 50% chance that the sperm carries an X- or a Y-chromosome.
What is the probability of the offspring retracting a recessive gene (aa)?
25%, 50% chance the offspring will retract a heterozygous dominant gene, 25% chance of it being homozygous dominant and 25% chance homozygous recessive.
What is the behavioural perspective?
We are who we are/do what we do due to involuntary reactions to environmental stimuli, reinforcement of behaviors, and observing and imitating others
What is the psychoanalytic or psychodynamic perspective?
We are who we are/do what we do due to…bad or good childhood experiences and memories hidden in our subconscious
What is the cognitive perspective?
We are who we are/do what we do because we actively think about past and present and make predictions about our future as we interact with environment
What is the biological perspective?
We are who we are due to biological and physiological causes and their interactions with nurture factors
What is the evolutionary perspective?
We are who/how we are due to “survival of the fittest” interaction of our genes with our environment
What is the humanistic perspective?
Every human has a desire to achieve to his or her fullest potential; humanists look at environmental factors that are necessary to reach fullest potential and what prevents others from doing so
What is the sociocultural perspective?
We are who we are, do what we do due to…the culture in which we are raised and social expectations and norms