Meiosis
How many divisions take place during meiosis?
2
Set up a punnett square using the letter B for a cross between two homozygous dominant parents.
Ms. Leonard will check
What is genetics the study of?
Answers may vary (something about how traits are passed down from parents to offspring)
Give an example of a polygenic trait
Answers may vary
Is a zygote a haploid or a diploid cell?
Diploid
The products of meiosis are:
A. identical haploid cells
B. non-identical haploid cells
C. non-identical diploid cells
D. identical diploid cells
B.
If you crossed a homozygous dominant parent with a homozygous recessive parent, what is the probability the offspring will be heterozygous?
100%
What is an allele?
A variation of a gene
Which blood type is an example of codominance?
Type AB
What division takes place in Meiosis II?
A). Homologous chromosomes
B). Sister chromatids
C). Non-homologous chromosomes
D). Cytoplasm
B). Sister chromatids
How many cells are there at the end of meiosis?
4
A punnett square was completed and the offspring's potential genotypes were: BB, Bb, Bb, bb. What is the genotypic ratio?
1:2:1
What is the difference between homozygous and heterozygous?
Homozygous means two of the same allele and heterozygous means different alleles
Can two parents who are blood type AB have a child who is type O? Prove it with a punnett square.
No
What blood type is known as the universal donor?
Type O
What happens during crossing over?
Non-homologous chromosome arms cross over and a piece breaks off and reattaches to the other chromosome
A punnett square was completed and the offspring's potential genotypes were: BB, Bb, Bb, bb. What is the phenotypic ratio?
3:1
What is a gamete?
A haploid reproductive cell (a sperm or egg cell)
Pretend fur color for mice is an example of incomplete dominance. Homozygous dominant mice have black fur and homozygous recessive mice have white fur. What color fur would a heterozygous mouse have?
Grey (or anything in between black and white)
How is polygenic inheritance different from simple mendelian inheritance?
It is a spectrum, rather than just two options
Name one of the ways meiosis creates genetic variation.
Crossing over or independent assortment
0%
What is meiosis?
The division of reproductive cells
Pretend fur color for mice is an example of codominance. Homozygous dominant mice have black fur and homozygous recessive mice have white fur. What color fur would a heterozygous mouse have?
Black and white fur
What are the chances of getting a homozygous recessive offspring when two heterozygous parents are crossed? Prove it with a punnett square
25%