Definitions
Represented by a capital letter, Means if present the phenotype will be me! More of me in a population.
What is Dominant?
mom and dad make 1 child with blue eyes and 1 with brown. Hint(This is the version of the gene)
What is different combination of alleles?
Given a cross of pure breeds, GG x gg, what is the probability of the offspring being hybrids?
100%
a brown and a white mouse are crossed. 100% of the offspring are brown. What are the parents GENOTYPES?
BB x bb
Represented by a lower case letter. Can only have my phenotype when there are 2 lower case letters!
What is Recessive?
One version is passed from each parent to give the child a CERTAIN CHARCTERISTIC. Hint(Not allele)
What are traits?
If two heterozygous parents are crossed, what is the probability of having Pure breed offspring?
50%: GG=25% and gg= 25%
A Purple and a white flower are crossed. 50% of the offspring are purple and 50% are white. What are the parents GENOTYPES?
Pp x pp
Represents a 2 allele combination that displays the specific Genes in an organism.
What is Genotype?
A brown mouse is mated with a white mouse 3 times and each time the offspring are brown. How is this possible?
Brown is dominant to white.
Create a Punnett square for a cross of Tt x tt. What is the probability of having off spring with the DOMINANT PHENOTYPE?
50%
a man and women have a baby. The mom is recessive for blue eyes. The dad has Brown eyes. What is dads GENOTYPE if they have 3 babies and 2 have brown eyes and 1 has blue?
Bb
The physical characteristics, example hair color or eye color.
What is Phenotype?
In pea flowers purple is dominant to white. What color will the flower be if it is heterozygous?
Purple
Cross a Homozygous dominant and a Heterozygous plant. Purple is dominant, what is the probability of the offspring having the DOMINANT PHENOTYPE?
100%
Round is dominant to triangle. A round and a triangle have a baby, it is round. Can we determine dad's GENOTYPE? what is/are the possible genotype/s?
NO, RR or Rr
Two of the same alleles.
What is homozygous?
If mom dyes her hair blond and dad has brown hair, what is the probability of their children having blond hair?
0% Acquired traits can not be passed on!!
Cross a Homozygous dominant and a Heterozygous plant. Purple is dominant, what is the probability of the offspring having the homozygous dominant GENOTYPE?
50%
Brown hair is dominant to white in mice, if a heterozygous brown mouse is crossed with a white mouse, what would you expect to see as the results of their offspring?
50% brown
50% white