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Year 10 Genetics and Evolution Flashcards | StudBud
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Year 10 Genetics and Evolution
Year 10 Genetics and Evolution
20 terms
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Year 10 genetics and evolution
Flashcards
20 cards
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Questions
20
Answers
1
Variation within a species can occur by:
acquired characteristics
mutation.
none of these answers
chromosomes
2
What does a DNA nucleotide comprise of?
a sugar group
one of four bases
a sugar group, a phosphate group and one of the fourbases
a complementary pair
3
What would be the complementary DNA strand to ATTGCCGTG?
ATTGCCGTG
TAACGGCAC
TAAGCCCAC
ATTCGGCAC
4
How many different phenotypes would result from the cross shown in the punnett square
8
4
3
2
5
The difference between RNA and DNA is:
DNA has an extra oxygen atom in the sugar
DNA has thymine
RNA has thymine
RNA has adenine
6
The theory of evolution is usually credited to
Issac Newton
Marie Curie
Charles Darwin
Alfred Wallace
7
Anadaptation is:
whenspecies stop interbreeding
theproduction of fertile offspring
thestudy of a certain species
a trait that helps an organism survive in its environment
8
Which type of cell division is shown in this diagram
mitosis
meiosis
meiosis and mitosis
miosis
9
The Theory of Evolution by Natural Selection states:
all organisms survive to reproductive age
There is no variation between individuals
Some organisms are better suited to their environment
organisms acquire traits during their lifetime
10
Which nucleotide will bond to adenine in DNA
cytosine
guanine
uracil
thymine
11
Which of the following is incorrect
DNA strands are longer than RNA
DNA is arranged in a double helix
RNA is arranged in a double helix
RNA is single stranded
12
Which of the following is true for both mitosis and meiosis?
They involve the replication of DNA
They produce two daughter cells per division
They produce 4 daughter cells per division
They occur in all cells in the body
13
In this pedigree, the trait shown by the affected individuals would be:
dominant
recessive
neither recessive or dominant
either recessive or dominant
14
Which of the following is correct
Females have XY
Males have XXY
Females have two X chromosomes
Males have two X chromosomes
15
What is the definition of allele?
different form of a cell
same type of gene
different form of a chromosome
different form of a gene
16
Which of the following is a mutagen?
nucleic acids
protein
UV radiation
water
17
Cats have 38 chromosomes in each body cell. What is the diploid and haploid number of a cat?
Diploid 19 and haploid 38
Diploid 38 and haploid 19
diploid 38 and haploid 38
diploid 19 and haploid 19
18
A recessive trait is one that is expressed in
Only ever in the homozygote
both the homozygote and heterozygote
the homologous
a heterozygote
19
In rabbits, normal colour(A) is dominant to albino(a). Work out the percentages from this cross
50% normal colour and 50% albino
100% normal colour
100% albino
75% normal colour and 25% albino
20
An autosomal trait is one carried on :
chromosome 23
every chromome
chromosomes 1-22
no chromosome
