reproduction Flashcards

1
Q

give example on how organisms reproduce asexually

A

plants

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2
Q

what is meant by the term species

A

a group of living organisms that can reproduce

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3
Q

what are the structures in the nucleas that carry instructions for characteristics

A

chromosones

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4
Q

name the chemical that carries out these instructions

A

DNA

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5
Q

explain the term genotype

A

a collection of allelies that determine the phentotype

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6
Q

explain the term phenotype and an example

A

a small section of DNA on a chromozone that codes for a specific protein eg:eye colour

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7
Q

name the unit of DNA that contols a characteristic

A

a gene

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8
Q

what is a dominant gene

A

when the gene is more dominant-it is more likely to be the gene the baby carries out

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9
Q

what is a recessive gene

A

when the gene is less dominant to be the gene the baby carries out

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10
Q

how many genes do cells carry for each characteristic

A

2

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11
Q

how many genes do gametes carry out for each characteristic

A

1

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12
Q

what is mesant by mutation

A

any change in the DNA sequence of a cell

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13
Q

what is evolution

A

the change in the characteristics of a species over generations and relys on natural selection

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14
Q

give an example of variations in a predotar and how it would improve its chance of survival

A

a predator may attack larger groups with a higher frequency

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15
Q

what is natural selection

A

genetic mutations that are beneficial to an individuals survival are passed through reproduction

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16
Q
A
17
Q
A