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WorksheetsSLO 4.3 (Mitosis, Meiosis, and Genetic Variation)
Total questions: 17
Worksheet time: 2hrs 40mins
In which stage of MEIOSIS does crossing over occur? (The exchange of DNA between homologous chromosomes)
Anaphase I
Metaphase I
Prophase I
Telophase I
Meiosis results in?
2 identical daughter cells
known as somatic cells
3 daughter cells and 1 egg cell
4 different daughter cells known as gametes
8 identical gametes
The main purpose of Meiosis 1 is to separate SISTER CHROMATIDS while the main purpose of Meiosis 2 is to separate HOMOLOGOUS CHROMOSOMES
True
False
The genotype is...
the physical appearance of an organisms traits.
The genetic information that codes for an organisms traits.
The Phenotype is...
the physical appearance of an organisms traits.
The genetic information that codes for an organisms traits.
Explain the difference between someone who is homozygous dominant, homozygous recessive and heterozygous for a trait.
Use eye color as an example:
blue eyes are recessive and brown eyes are dominant.
Look at the information about the colors of chicken feathers.
Black = B, White = W, Blue chicken = BW
Fill in the Punnett Square below showing a cross between 2 Blue Chickens.
What is the probability that the parents from the previous question will have a chicken with black feathers? (BB)
0%
25%
50%
100%
Explain what the result of a red and white cow mating would be if this is a codominance.
Complete the Punnett square for a red cow (RR) crossed with a white cow (WW).
What is the probability that the parents from the previous question will have a white cow?
0%
25%
50%
100%
Notice the genotypes of the family members in the example shown (RR, Rr, and rr). Explain why Jill and Jack do not have the same genotypes as their parents or as one another. Use 2 of the processes that can cause genetic variation in families.
