Punnet Squares
A homozygous dominant brown horse is crossed with a heterozygous brown horse. yellow is recessive. Give the Genotype and Phenotype in percentage.
Genotype: 50% homozygous brown, 50% heterozygous brown,Phentoype: 100% Brown
What does Homozygous mean?
An individual that has two of the same alleles.
Describe Heterozygous
An Individual that has two different alleles.
What does RNA stand for?What does DNA stand for?
RNA: ribo nucleic acid DNA: deoxyribonucleic acid
How many cells does Mitosis result in and what are they?
2 identical cells
Assume that brown eyes x are dominant to tan eyes x in bears. When a brown eyed male is mated with a tan eyed female, 50 % of the bears have brown eyes and 50% of the bears have tan eyes. What is the genotype of the female Bear?
xx
What is an Example of Homozygous?
BB,and bb
Give an Example of heterozygous
Bb
How many strands does RNA and DNA have?
RNA:Single stranded DNA:Double stranded
Meiosis is very similar to mitosis however, meiosis happens how many times?
2
The gardener’s husband thinks that since they now have all pink flowers, they can keep crossing the pink flowers to get only pink flowers.Is her right?
He is wrong because if the pink flowers cross then they would get white.
What word also means Homozygous?
purebred
What word means the same as a heterozygous?
Hybrid
What are the sugars in DNA and RNA
DNA:Deoxyribose RNA:Ribose
Meiosis is the type of cell division that produces what?
gametes
If the punnet square to the left,T=tall and t=short.Give the parents genotype
Tt
What is a recessive trait?
A characteristic that is often masked by a dominant trait.
What does ratio mean?
A comparison of how often a phenotype appears
Where is DNA and RNA found in a cell?
DNA:Nucleus RNA:Cytoplasm
What cells undergo meiosis?
Sperm cells
Give the phenotypes for the parents
3:tall (Tt) 1:short (tt)
How are Recessive Traits represented?
Capital letters
What is an Allele
A version of a trait
What is the function of DNA and RNA?
RNA:To transcribe and translate DNA.
DNA:To carry genetic information
What does Meiosis result in?
4 haploid daughter cells