DNA
How many chromosomes in a autosomal (body) cell?
46 or 23 pairs
Bb is an example of a what genotype?
Heterozygous
What form of cell division occurs only in plants, animals and fungi?
Meiosis
What mechanism of evolution am I?
Two separate populations now live together.
Gene flow (migration)
I’m tall when I’m young, and I’m short when I’m old. What am I?
A candle
What term is used to describe different versions of the same gene?
Allele
Trait that masks the other trait of a pair of alleles
Dominant
What type of cell division occurs only in plants, animals and fungi?
Meiosis
What is speciation?
The creation of a new species.
The more of this there is, the less you see. What is it?
Darkness
A nucleotide contains what?
Sugar, phosphate and a base.
What is a phenotype and what influences it?
Both parts MUST be correct.
Physical charicteristic or trait.
Genotype and environment.
What type of cell division ends with each daughter cell being genetically different
Meiosis
Define evolution?
Change in frequency of alleles over generations
What building has the most stories?
The library
Spell correctly what DNA stands for.
Deoxyribonucleic acid
If a homozygous dominant brown haired parent and a homozygous recessive blonde haired parent breed, what is the chance of having a brown haired child.
100%
all children must be Dd - heterozygous
What are 3 purposes of cell division?
growth, repair, sexual reproduction
What is the process by which organisms best suited to their environment survive to pass their genes on to their offspring.
Natural Selection
How can the number four be half of five?
f (IV) e
Roman numerals IV = 4
What do A and T stand for?
Adenine
Thymine
(also guanine and cytosine)
If two heterozygous brown haired parents breed, What is the % chance of having a blonde haired child?
25%
Why do sexually reproducing organisms have greater genetic diversity?
because they undergo Mitosis which includes crossing over/shuffle genetic deck. They also gets half DNA from 2 different parents.
a structure that no longer seems to have a purpose?
Vestigial Structure
If you travel south 1km, east 1km, north 1km and end up where you started, what colour bear did you see.
White
You must be at the North Pole to finish in the same spot you started.