Genes & Alleles
In your own words, define genes.
Genes are sections of DNA that code for a particular trait.
In butterflies, white wings are dominant to yellow wings. If a Wy butterfly is crossed with a yy butterfly, what are the possible outcomes for the offspring?
50% White :50% Yellow
Alleles appear in pair, true or false?
True
What is the probability of having a son or daughter for any given pregnancy?
50%
What is the meaning of homozygous?
Two same alleles
Can two brown eyed individual have an offspring with blue eyes?
Yes, because of recessive alleles from the parents who are heterozygous.
What is the meaning of heterozygous?
Two different alleles.
Two individuals who are homozygous dominant (SS) for straight hair are having their first child. What type of hair will the offspring have?
SS x SS= 100% SS
Therefore ALL offspring will have straight hair.
What is the difference between dominant and recessive alleles?
Dominant alleles overpower the recessive alleles.
Curly hair is a recessive trait. What alleles represent curly hair?
cc (Two LOWERCASE c)