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In meiosis, the DNA is replicated during interphase followed by two division. The first division is meiosis I. Study the events of prophase I and explain these terms.synapsischiasmata
One of the keys to success for Mendel was his selection of pea plants. Explain how using pea plants allowed Mendel to control mating; that is how did this approach let Mendel be positive about the exact characteristics of each parent?
An event that is certain to occur has a probability of ____ , while an event that is certain not to occur has a probability of ____.
YyRr x YyRr punnet square, phenotypic ratio
Define the following terms. Then consider your own family. Which generation would your mother's grandparents be? Your mother? You? P generationF1 generationF2 generation
Explain how gametes are derived for the following cross.YyRr x YyRr
During Meiosis I, homologous chromosomes separate. What separates during Meiosis II?
How many chromosomes does the cell above have? ________How many homologous pairs? _________How many chromatids? __________Is this cell haploid or diploid? _________
Now study the chromosomes in anaphase I & telophase I. How many chromosomes are in each cell at the end of the first meiotic division? ________
Your study of plants this year will include knowing that they exhibit alternation of generations.a. What does this mean?b. What are the two generations?c. Which generation is haploid, & which is diploid?
Looking at the three types of sexual life cycles. Plants have a life cycle that involves spores, which form as a result of _____________ so these spores are haploid. Both haploid & diploid cells can divide by mitosis. However, meiosis begins with cells that are _________________, & as a result of meiosis, daughter cells are formed that are always ____________________. These cells can be gametes (animals) or spores (plants).
Cells that have only one of each homologous pair are said to be haploid. Cells that have two of each homologous pair are said to be diploid. For each of the following, is the cell haploid or diploid? liverzygotesomaticgameteskinstemegg sperm
The muscle cells of a dog have 78 chromosomes. Fill in the correct chromosome number in a dog.bone cell_______ sperm_______ haploid cell_______ somatic cell_______ zygote_______
Which type of reproduction will result in genetically identical offspring? __________________
By what process are gametes produced? ____________
How many chromosomes are in human cells? ______
"Why sex?" Any individual passes on more of its gene through asexual reproduction, so there must be some advantage to sexual reproduction, as it is almost universal among animals. Under what conditions is sexual reproduction most advantageous & why?
34) Repetitive sequences are useful for DNA fingerprinting because theyA) are not inherited and so are unique to every individual.B) are unique to every individual and change from generation to generation.C) are inherited and can show significant variability between individuals.D) never undergo mutation.
32) Horizontal gene transfer occursA) within and between species of eukaryotes and prokaryotes.B) between prokaryotic species only.C) between eukaryotic species only.D) only from prokaryotes to eukaryotes.
36) If two individuals of a population, who vary in their phenotype, preferentially mate, it is called ________.A) OutbreedingB) InbreedingC) Negative assortative matingD) Positive assortative mating

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