Bio Question Flashcards by Althea Knowles

Q

When can chromosomes be found

A

During cell division

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Q

XX

A

Female

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Q

XY

A

Male

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Q

How much DNA does an average person have

A

2m

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Q

How many Nucltide bases does an average human have

A

3 mill

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Q

How many genes does an average human have

A

32000

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Q

What order does the genetic material go in

A

Cell, Nucleus, Chromosomes, DNA, Genes

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Q

What does Adenine bond with

A

Thymine

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Q

What does Guanine Bond with

A

Cytosine

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Q

What type of daughter cells does mitosis make

A

Two genetically identical cells diploid cells

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Q

What type of daughter cells does mieosis make

A

Four genetically variable haploid cells

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Q

What happens in Interphase

A

Chromosomes duplicate

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Q

What happens in prophase

A

Chromosomes condense
cell structure breaks down

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Q

What happens in metaphase

A

Spindle capture chromosomes

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Q

What happens in Anaphase

A

The sister chromatids seperate

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Q

What happens in telophase

Study These Flashcards

A

Normal cell structures are reestablished

Q

What makes meiosis different

Study These Flashcards

A

PMAT happens twice

Q

When does Meiosis happen

Study These Flashcards

A

Sexual cell reproduction

Q

When does mitosis happen

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A

Bodily repair growth

Q

What are the three effects of mutation

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A

Neutral
Harmful
Helpful

Q

What are the two types of mutation

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A

chromosome
Gene

Q

When does gene mutation occur

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A

Only happens when cells divide

Q

Types of mutagens

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A

UV radiation
Chemical exposure
Nuclear radiation

Q

Types of gene mutation

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A

Deletion
Insertion
Substitution

Effects of substitution

Missense Nonsense Silent

What does a silent substitution mutation

Does not change the coded amino acid

What does a missence substitution mutation

If the mutation changes the amino acid

What does a nonsense substitution mutation

Tells the code to stop before it is meant to

Who started the study of heriditry

Gregor Mendel an Austrian monk

If two parents have the genotype Bb and bb what are the chances of the child inheriting the resscesive gene

50 petvent

What are the three types of biodiversity

Genetic Species Ecosystem

How does genetic variation occur

Independent assortment Recombination Mutations

Natural selection is also known as

The survival of the fittest

Biotic factors include

Predators Competition Food Diseases

Abiotic factors

Temperature Salinity Soil Weather Water Space Oxygen Air and wind