Unit 5
Unit 6
Unit 7
100
The two processes that allow our genes to code for our physical traits
Transcription and Translation
100
If you have one dominant allele and one recessive allele for a trait, then you are ______________ for that trait.
Heterozygous
100
What is the strongest evidence for evolution?
DNA (or amino acid sequences)
200
If the mRNA sequence "AUG CUA CCG AGC" undergoes translation, how many amino acids will the resulting protein contain?
4
200
Brown eyes (B) are dominant to blue eyes (b). If two heterozygous parents have a child, what is the % chance that the child will have brown eyes?
75%
200
Which animal is most closely related to the house cat?
The Lion
300
If an Atlantic Salmon sperm cell has 27 chromosomes, how many chromosomes are present in an Atlantic Salmon Zygote?
54 chromosomes
300
Brown fur color is dominant to black fur color in dogs. If two brown dogs have a litter of puppies and 6 of the puppies are brown while 2 of the puppies are black, what must be the genotypes of both parents (Use B/b)
Both parents most be Bb
300
Horses and Donkeys are able to have offspring (mules), but mules are unable to produce offspring of their own. Are horses and donkeys the same species or different species?
Different species because they cannot produce viable offspring
400
List at least two differences between mitosis and meiosis
Mitosis: 1 round of division, makes 2 identical daughter cells, makes diploid somatic cells
Meiosis: 2 rounds of division, makes 4 unique daughter cells, makes haploid gametes
400
Describe the difference between polygenic inheritance and incomplete dominance
In polygenic inheritance many genes control a trait; In incomplete dominance heterozygous individuals (Rr) have an intermediate trait rather than the dominant trait.
400
Describe how the mouse population has changed over time and explain why it has changed this way using natural selection in your answer.
Over time gray mice have become more common. They have become more common because their color allows them to blend into their environment, survive, reproduce, and pass on their gray color.
500
Describe how translation works in detail
mRNA is read 3 base pairs at a time by the ribosome. tRNA anti-codons pair up with mRNA codons and deliver the correct amino acid to the growing amino acid chain
500
Color blindness is an X-linked trait. If a woman who had a healthy father and a color-blind mother has a child with a healthy man, what is the % chance that their child is a carrier for color-blindness?
25%
500
What are the three conditions that must be met for Natural Selection to occur in a population?
1. More offspring are produced than can be supported by the environment
2. There is heritable variation among individuals
3. Variations lead to differential fitness among individuals