Punnet Squares
If two parents with genotypes Aa and AA were crossed what is the probability that an offspring will have a homozygous dominant genotype?
2/4
Flower color, Flower position, seed color, seed shape, pod shape, Pod color, stem length
testcross:
breeding a mystery individual with a homozygous recessive individual to determine genotype
If a two parents with blood type BO and AB were crossed what si the probability of an offspring have type A blood.
1/4
You do a test cross and find that the dominant purple flower can produce a recessive white flower offspring. What is the genotype of the purple flower?
Heterozygous dominant, Pp
What was the genotype of the F1 generation when Mendel crossed a true-breeding purple flower and a true-breeding white flower?
Heterozygous
A gene at one locus affects the expression of a gene at another locus
If a parent that is a carrier for sickle cell disease is crossed without parent without sickle cell, what is the probability that the offspring will be a carrier?
2/4
What is the phenotypic ratio of brown eyes (dominant) to blue eyes (recessive) when the parents genotypes are Bb and bb?
1:1
What are the four concepts that make up Mendel's model
First: alternative versions of genes account for variations in inherited characters
Second: for each character, an organism inherits two allele, one from each parent
Third: if the two alleles at a locus differ, then one (the
dominant allele) determines the organism’s appearance,
and the other (the recessive allele) has no noticeable effect
on appearance
Fourth:(the law of segregation): the two alleles for a heritable
character separate (segregate) during gamete formation and
end up in different gametes
Law of segregation
Bonus: Which phases was this based off of?
the two alleles for a heritable character separate (segregate) during gamete formation and end up in different gametes
Anaphase 1
FfHh and FFHh are crossed. What is the percent probability that of the offspring being dominant at F locus and recessive at h locus?
25%
If two dogs with genotype BBcc and BbCC were crossed, how many offspring would have the dominant phenotype at both loci?
4/4, 100 %
T or F, The law of independent assortment corresponds to the distribution of homologous chromosomes to different gametes in Meiosis
Independent assortment of chromosomes
A gene on one chromosome does not affect the
segregation or inheritance of other chromosomes
If two parents have a child who is a carrier for Tay Sachs Disease. What are the possible genotypes for the parents?
Aa and AA or Aa and Aa
If two parents are carriers for a lethal mutation, what is the probability that their child will die from this mutation?
1/4
Genes located near each other on the same chromosome tend to be inherited together because they are _________
Genetically linked
Codominance vs incomplete dominance
two dominant alleles affect the phenotype in
separate, distinguishable ways (two traits show)
the phenotype of F1 hybrids is somewhere between the
phenotypes of the two parental varieties (two traits blend)
if A represents the dominant allele for long legs and a represents the allele for short legs. What is the genotypic ratio of a heterozygous long legged person being crossed with a short legged person?
1:1