Who is more common to get recessive x-linked disorders?
Males
100
What is the area in square units of a normal diyhbrid cross?
4x4
100
If you cross two recessive homozygous people, then what percent of the offspring will be heterozygous?
0%
200
If a parent is a carrier of brown hair but shows blonde hair, what is her genotype?
Bb
200
What is the definition of homozygous?
Two copies of the same trait.
200
What happens if both parents are carriers of the x-linked disorder?
25% of the offspring will have the disorder.
200
When should you do a dihybrid cross?
When you're crossing more than one gene.
300
If both letters are capitalized then is it homozygous or heterozygous?
Heterozygous
300
If both letters are lowercased, is it heterozygous, dominant, or homozygous?
Homozygous
300
True or false... Recessive x-linked disorders are only connected to x.
True
300
What makes dihybrid crosses different from regular punnett squares?
Dihybrid crosses are different from regular crosses because they cross 2 traits instead of one.
300
What percent of the offspring is heterozygous in a cross of Hh and Hh.
50%
400
h stands for hemophilia.... X^HX^h
Heterozygous. Carrier for hemophilia
400
c stands for color blindness.... X^cX^c
Diseased
400
Why are male more common to get recessive x-linked disorders?
Because males have one x, and that means that they only need one copy of the gene.
400
What percent of offspring carries both colorblindness and hemophilia if both parents are completely healthy?
0%
400
True or false... Normal punnett squares only cross one trait.
True
500
If both parents have a recessive x linked disorder, are they heterozygous? Why?
No because they are diseased and if they were heterozygous then the dominant gene would overshadow the recessive disorder.
500
If one parent has the recessive x linked disease, and one is a carrier, what percent of the offspring is homozygous.
50%
500
Can a male be a carrier for a recessive x linked disorder, why?
No because they only have one x.
500
Cross green eyes and homozygous brown hair with green eyes and red hair. What percent of the offspring has brown hair if homozygous red hair is recessive.
all
500
What percent of the offspring of two recessive homozygous parents for colorblindness are female.