Development
Genetic diversity/DNA
Drosophila/
Butterfly
Butterflies/
Insects
Last Quiz
100
Life first emerged on earth approximately _______ years ago.
3.7 billion years ago
100
Blue eye colour has a ___ which does not allow helicase to unwind keeping mRNA from being transcripted, keeping DNA packed together. Brown or darker eye colour has a ___.
C, T
100
What mutant gene is responsible for the bithorax mutant in drosophila?
Ultrabithorax
100
A mutation that creates an extra set of wings is know as?
Bithorax
100
What is the function of Hox genes?
Specify segment identity
200
what molecule is responsible for black and brown colouring in hair?
Eumelanin
200
Individuals with blue eye colour have a mutation that reduces the amount of _______ protein.
oca2
200
In the absence of ubx .....
T3 segment becomes T2, halter becomes a wing
200
The gene that is involved in butterfly: embryo patterning, wing disc patterning, focal determination, and eye spot differentiation is?
Engrailed
200
The gene pax-6 is involved in? Genes such as Hox, Dill, tin man and Pax-6 are all?
eye development, Transcription factors
300
The cambrian Explosion began approximately ______ million years ago.
540 million years ago
300
The genome size of humans is?
3.2 billion base pairs
300
What gene controls halter development in Drosophila? what gene controls hindwing development in the butterfly?
Ubx
300
The butterfly wing field is patterned by:
Re-using existing patterning genes
300
The last common ancestor of protostomes and deuterostomes contained ________, ______, ____ and __________.
Hox cluster, Pax-6, Dill and tinman
400
The theory that all humans trace their ancestry back to one male and female is know as ________.
Coalescence
400
what percentage of non-African genomes are composed of Neanderthal sequence?
1.5%-2.1%
400
Differentiation of butterfly eyespots is controlled by______ and _______.
Engrailed and Spalt
400
Transplantation of the pupal eye spot focus to other regions of the wing results in?
An eyespot forming at the site of transplantation
400
Immortal genes are?
genes whose sequence hasn't changed significantly in 2 billion years.
500
Melanin production occurs in what organelle? The pigment melanin is responsible for ____, _____ and _________ in humans. Blue eye colour is the result of?
Melanosomes, skin, hair and eye colour, Collagen fibers in the eye that scatter blue light.
500
Small changes in Dna make a difference in an organism an example of this is?
99% human DNA is identical but that 1% makes a fairly large difference.
500
Insect wings may have originated from the _______ of multi-branched crustacean limb.
Epipod
500
What is the Nymphalid Ground plan? Does every butterfly have the complete ground plan?
A system of symmetries that can be identified across thousands of species. No.
500
Imaginal discs are? Serial homologs are defined as?
A group of cells set aside in the early embryo that give rise to adult structure. Structures that arose as a repeating series and have subsequently become differentiated.
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