DNA, Genes, Chromosomes
What molecule stores the instructions for building proteins and traits?
What is DNA?
Which type of reproduction requires only one parent?
What is asexual reproduction?
What does it mean for an allele to be dominant?
What is a dominant allele is expressed in the phenotype even if only one copy is present?
Which term describes the genetic makeup of an organism?
What is genotype?
What does each box in a Punnett square represent?
What is a possible genotype of an offspring?
the scientific study of heredity is called...
What is genetics?
Why does sexual reproduction usually lead to more genetic variation than asexual reproduction?
What is sexual reproduction combines genetic information from two parents, creating new allele combinations?
Predict the phenotype of an organism with the genotype Aa and explain your reasoning.
What is the organism will show the dominant trait because the dominant allele masks the recessive allele?
If B represents the dominant allele for black fur and b represents the recessive allele for white fur, predict the phenotype of an organism with the genotype Bb.
What is the organism will have black fur because the dominant allele (B) masks the recessive allele (b)?
If two heterozygous parents have a child, what is the probability the child shows the recessive trait?
What is 25%?
the part of the chromosome that controls our traits are called...
What are genes?
Describe one advantage and one disadvantage of asexual reproduction.
Answers may vary but
Advantage: Fast reproduction or no need for a mate
Disadvantage: Little to no genetic variation
Why can a recessive trait skip a generation?
What is because individuals can carry the recessive allele without showing the trait if they also have a dominant allele?
Why can two organisms have different genotypes but the same phenotype?
What is because different allele combinations can produce the same visible trait? (AA or Aa)
Predict the genotype and phenotype % for Aa × aa and justify your answer.
What is?
Genotypes: 50% Aa, 50% aa
Phenotypes: 50% dominant trait, 50% recessive trait
How are genes and chromosomes related to each other?
What is genes are located on chromosomes?
Predict which type of reproduction would help a species survive better in a changing environment and explain why.
What is sexual reproduction, because genetic variation increases the chances that some offspring will survive environmental changes?
Explain why a dominant trait is not always the most common trait in a population.
What is dominant traits can still be rare if the dominant allele itself is uncommon in the population?
Explain how environment can influence phenotype without changing genotype.
What is environmental factors like diet, temperature, or sunlight can affect how genes are expressed?
Explain why offspring from the same parents can have different traits.
What is each offspring receives a different combination of alleles due to random assortment?
Explain why every cell in your body has the same DNA but looks and functions differently.
What is cells express different genes depending on their function, so they produce different proteins even though the DNA is the same?
Explain how reproduction type affects the chances of offspring surviving diseases.
What is sexual reproduction increases genetic diversity, making it more likely that some offspring are resistant to disease?
A plant shows a dominant trait, but both of its parents show the recessive trait. Explain how this could happen, or explain why it cannot.
What is this cannot happen because an organism showing a dominant trait must have at least one dominant allele, and parents showing the recessive trait can only pass on recessive alleles?
Predict how phenotype would change if a dominant allele stopped working.
What is the recessive trait would be expressed because it would no longer be masked by the dominant allele?
A Punnett square predicts a 75% chance of a dominant trait appearing. Explain why this does not guarantee that exactly 75 out of 100 offspring will show the trait.
What is punnett squares show probability, not certainty. Actual results can vary due to chance, especially with small numbers of offspring?