Download Brainpop Genetics questions Weinmann ANSWERS

Brainpop Genetics
1. What is heredity?
- D. the passing down of traits from parent to children
2. Which of the following depicts (shows) a molecule of DNA?
- B
3. What is the relationship between DNA and chromosomes?
- A. chromosomes are made out of DNA
4. How many PAIRS of chromosomes exist in each of your cells?
- D. 23 pairs (46 individual)
5. Why are your chromosomes arranged in pairs?
- B. because you get one from your mother, and one from your father
6. Which of the following statements is true?
- D. your set of DNA is unique to you
7. How are these cells different from others?
- B. they have half the normal amount of genes
8. Besides genetics, what other factors are responsible for how you will grow and
develop?
- C. nutrition and environment
9. Curly hair is dominant, and straight hair is recessive. If a curly-hairs man has a
baby with a straight-haired woman, what will happen?
- C. the baby will PROBABLY have curly hair
10. Which of the following is completely determined by your genes?
- B. your bone structure
Where are the chromosomes found in our bodies?
Chromosomes are found in the nucleus of almost all cells in our bodies.
What other factors affect our traits?
The environment, nutrition, random mutation are all factors which influence our traits.
How can two brown eyed parents have a child with blue eyes?
See Punnett square on side.
B
b
If the parents are both brown eyed,
B
B
then each must have one dominant
Bb
B BB
BB
B BB
allele (B). The two Punnett squares
show the possible genotypes for the
bb
b Bb
Bb
b Bb
parents. Highlight is the only blueeyed child, therefore the parents
genotypes must both be heterozygous for eye color (Bb).