Random #1
A heterozygous organism's genotype would be this.
What is different?
Describes an organisms genetic composition.
What is genotype?
The trait that hides in the background and can only be expressed as homozygous.
recessive
Mr. Mark and his son Jack are both tall and left handed. Jack's friend says it is because they have identical genetic material. Is Jack's friend correct? Why?
No because you can not have identical genetic material as your parents.
The allele for normal skin (S) is dominant to the allele for eczema (s).
If one parent has eczema and the other parent is a carrier, what is the probability that their child will have eczema?
50% (MUST SHOW PUNNETT SQUARE)
Give an example of a genotype and an example of a phenotype and label.
EXAMPLE:
Genotype- Bb
Phenotype- Brown Hair
Strands of DNA and proteins that carry transferable hereditary information.
What is Chromosomes?
The letters that make up a genotype.
What is an allele.
Pink flowers (P) are dominant color in flowers; white flowers (p) are recessive. If a flower is pink, what are the possible genotypes?
-PP homozygous dominant
or
-Pp heterozygous
Cat's can either have a brown body or black body. The allele for brown hair (B) is dominant to the allele for black hair(b).
A homozygous brown cat was crossed with a homozygous black cat.
What is the probability of the offspring being brown?
100% (MUST SHOW PUNNETT SQUARE)
Describes an organisms appearance or physical characteristics.
Phenotype
Moe has brown eyes and so does his wife Margie. They have 4 children, 3 have brown eyes but 1 has blue.
What is the best explanation?
Any answer is accepted:
-the blue eyes were a result of the expression of a recessive gene.
-both parents had to be heterozygous.
the different forms of a characteristic (dimples, widows peak)
What is trait.
Parker met Pam at the lake. Both of them are heterozygous for their (E) attached ear lobes, which is dominant over a (e) free ear lobe. Create a punnett square to show the possibilities that would result if Parker and Pam were to have children. What is Parker's genotype?
Pp
In pigs, brown hair (B) is dominant and pink hair (b) is recessive. A pig that is (BB) is crossed with a pig that is (Bb).
What can you predict the offspring will be.
All of them will be brown.
Give the phenotypes for the following. R-red r-orange
a- RR
b- rr
c-Rr
-Red
-orange
-red
Some people have a widows peak and some do not. The differences in these traits are caused by what.
What is differences in genes?
What is heredity
The contain your genes.
What is chromosomes?
In bears, smooth hair is dominant over curly hair. A cross is made between a curly haired bear and a heterozygote. What is the probability of getting offspring that are homozygous smooth?
0% (MUST SHOW PUNNETT SQUARE)
The factor that controls a trait you exhibit?
Allele
Other word for purebred and hybrid.
Purebred-homozygous
hybrid-heterozygous
A chart that allows you to determine the expected percentages of different genotypes in the offspring of two parents.
What is a punnett square?
True or False: An offspring gets one allele from the father and one from the mother.
If a purebred normal haired duck (DD) is crossed with a frizzy-haired duck (dd), how many different hair phenotypes are possible in the offspring?
1 (MUST SHOW PUNNETT SQUARE)