Natural Selection
Natural Selection
These are alleles produce a trait that is masked by dominant alleles. You need two of these to produce blue eyes.
Recessive Alleles
Amino Acids bond together to form
Proteins
The white flower allele is C1 The red flower allele is C2. The pink flower will have what allele combination?
C1C2
Chromosomes are tightly wound?
DNA
Sandra is studying a population of lady bugs. Over the next three years her lady bug numbers change:
Year 1: 10
Year 2: 12
Year 3: 15
Years 4: HOW MANY IN YEARS 4
19
This type of allele will produce a trait that masks another trait for the same characteristic. You can have one or two of these alleles and it will show such as brown hair.
Dominant Alleles
These create cell structure
Proteins
There are red and white flowers. Flowers can be red, pink, or white. This is an example of
Incomplete Dominance
DNA is found where in a cell?
Nucleus
Camouflage is used by rabbits to hide from their predators. Rabbits with brown bur are able to survive in a forest better than rabbits with white fur? What is this process called?
Natural Selection
The population of lady bugs has green dominant alleles (G) and red recessive alleles (g). What combinations of alleles can the next generation make?
GG, gg, Gg
Interpret the nucleotide sequence: CACTTTATG
HFG
A scientist finds that two alleles for the length of an animal's neck are G1(short neck) G2 (long neck). She is studying an animal that inherited the combination G1G2. This animal has a neck of medium length. What type of inheritance took place?
Incomplete Dominance
Proteins
Sandra is studying a population of lady bugs. Over the next three years her lady bug numbers change:
Year 1: 10
Year 2: 28
Year 3: 45
Years 4: HOW MANY IN YEARS 4
61
Lee is using a model to perform a genetic cross of dominant and recessive alleles. The alleles of the parents are BB and bb. Which combination of alleles will all of the offspring inherit?
Bb
Interpret the nucleotide sequence using the chart on your study guide:
TGTGCCACA
CAT
Tyson's mother has large ears (E1). Tyson's mother has short ears (E2). Tyson's father has inherited medium sized ears. Which allele combination has Tyson inherited.
Incomplete Dominance
Jamie is studying the color of black bears. She knows that brown bears have all inherited at least one dominant alleles (B) from their parents. Black bears did not inherit any dominant alleles from their parents.
What allele combinations do black bears have?
The peppered moths are white and black. The like to camouflage on birch trees. However, after the industrial revolution the tress became black. Knowing natural selection, what animal will survive? White or black?
Black
Olivia is working with plants that have either purple or white flowers. The purple allele is dominant (P). The white allele is recessive (p). How many allele combinations for flower color can be found in these plants?
3
PP, Pp, pp
Meghan uses genetic information given by her teacher to build two protein models. To function properly, each protein should be able to move through a space. However, protein A does not fit because it is not formed correct. Why do you think protein A cannot fit?
Protein A is mutated
Alex is learning about blood type. She finds that alleles from each parent always expressed in an offspring's blood type. Which type of inheritance is blood type an example of?
co-dominance
Stevie looks around the classroom. She notices that all the students in her class have different facial features. Why do all students have unique traits?
Students have unique combinations of alleles inherited by their mother and father.