Recessive and Dominant Traits
trait ✅✅a characteristic - for example seed color
heredity ✅✅the passing of traits from parents to offspring
genetics ✅✅the study of heredity
purebred (homozygous) ✅✅it always produces offspring with the same trait- for
example purebred dogs BB
genes ✅✅found on your DNA and factors that are in pairs which control traits
alleles ✅✅the different forms of a gene. Similar to different variations such as eye
color (Brown, Hazel, Blue, Etc..)
dominant allele ✅✅always shows up in an organism even when the other allele is
present
Also represented by a capital letter
Lastly, is the stronger gene
recessive allele ✅✅Is hidden whenever the dominant allele is present
Also, represented by a lower case letter
Lastly, the weaker gene
hybrid (heterozygous) ✅✅Has two different alleles for a trait. For example (Tt) or (Bb)
genotype ✅✅THE LETTERS. Exact combination of genes - BB, Ee, xx
phenotype ✅✅Physical trait and is determined from the organisms genotypes. You
can see the physical characteristics.
Gregor Mendel ✅✅Father of modern genetics
If two heterozygous parents had children. What would be the probability the offspring
could have the recessive trait appear. ✅✅25% or 1/4
If two homozygous dominant parents had children. What would be the probability the
offspring could have the recessive trait appear. ✅✅0% or 0/4
If one parent was heterozygous and the other was homozygous recessive. What would
be the probability the offspring could have the recessive trait appear ✅✅50% or 2/4
trait ✅✅a characteristic - for example seed color
heredity ✅✅the passing of traits from parents to offspring
genetics ✅✅the study of heredity
purebred (homozygous) ✅✅it always produces offspring with the same trait- for
example purebred dogs BB
genes ✅✅found on your DNA and factors that are in pairs which control traits
alleles ✅✅the different forms of a gene. Similar to different variations such as eye
color (Brown, Hazel, Blue, Etc..)
dominant allele ✅✅always shows up in an organism even when the other allele is
present
Also represented by a capital letter
Lastly, is the stronger gene
recessive allele ✅✅Is hidden whenever the dominant allele is present
Also, represented by a lower case letter
Lastly, the weaker gene
hybrid (heterozygous) ✅✅Has two different alleles for a trait. For example (Tt) or (Bb)
genotype ✅✅THE LETTERS. Exact combination of genes - BB, Ee, xx
phenotype ✅✅Physical trait and is determined from the organisms genotypes. You
can see the physical characteristics.
Gregor Mendel ✅✅Father of modern genetics
If two heterozygous parents had children. What would be the probability the offspring
could have the recessive trait appear. ✅✅25% or 1/4
If two homozygous dominant parents had children. What would be the probability the
offspring could have the recessive trait appear. ✅✅0% or 0/4
If one parent was heterozygous and the other was homozygous recessive. What would
be the probability the offspring could have the recessive trait appear ✅✅50% or 2/4
