Genetic Variation
This cell replicates via meiosis.
What is a sperm or egg cell ( gamete) ?
The term for a pair of alleles that are the same.
What is homozygous?
The dominant trait for pea seed color.
YY= Yellow
Yy= Yellow
yy = green
What is yellow?
The probability of an offspring to have a homozygous dominant genotype.
Rr X Rr
What is 25%?
Individuals that survive have variations that make them best suited for their environment. True or False.
What is True?
The step in meiosis that increases genetic variation.
What is crossing over?
The term for a pair of alleles that are different.
What is heterozygous?
The recessive trait for pea seed color.
YY= Yellow
Yy= Yellow
yy= Green
What is green?
The probability of an offspring that has a homozygous recessive genotype.
YY X Yy
What is 0%?
The process where humans breed organisms for certain traits.
What is artificial selection?
The term used to describe any biotic or abiotic elements that influence another organism.
What are/is environmental factors?
The letters along the top and side of the Punnett square.
What are the alleles of each parent?
The trait that will be expressed only if TWO alleles are present.
What is recessive?
The parent phenotypes in the cross below:
Rr X Rr
R= Round
r= Wrinkled
DAILY DOUBLE!
What is round?
The variation in beak size and shape that Darwin observed is due to this environmental factor.
What is the type of food they ate/was available?
Mutations in the body cells can contribute to genetic variation. (T or F)
The genotype of a plant that is homozygous dominant for red flower color (R).
What is RR?
The trait that will always be expressed if ONE copy of an allele is present.
What is dominant?
Phenotypes determine the genotypes expressed. True or False.
What is false?
According to Darwin, the concept that would result in evolution.
What is natural selection?
A cell starts with 24 chromosomes. If this cell goes through mitosis, each cell would be considered _______, because it would have both sets of chromosomes. If this same cell went through meiosis, it would be known as _______due to having half the number of chromosomes.
DAILY DOUBLE!
What is diploid, haploid?
A heterozygous plant (Rr) with red flowers is crossed with a homozygous plant (rr) with white flowers. The probability of white flowers.
What is 50%?
An offspring receives this number of alleles from each parent.
What is one?
The strand of DNA after a deletion (frameshift mutation) of the 4th T in the original strand of DNA.
Original DNA Strand:
ATG AAG TTT GGC TAA
What is ATG AAG TTG GCT AA?
These structures are similar features in different organisms that come from a common ancestor but ay have a different function. (Think of the picture of the arm bones)
What is homologous structures?