What enzyme is in Figure 14 8?
Restriction enzymes. Which enzyme(s) in Figure 14-8 would be best for cutting DNA to make fragments with sticky ends? EcoRI and BamL.
How many generations are shown in the pedigree in the figure?
(7.4) Pedigree flashcards
| A | B |
|---|---|
| How many generations are shown on this pedigree?, | 3 generations are shown. |
| Which individual is a female affected by the trait of interest?, | I-2 is the affected female. |
| Which individual is a male affected by the trail of interest?, | III-2 is the affected male. |
What is the appropriate probability that a human offspring will be female?
Since sperm are equally divided into X and Y chromosome sperm, the chances of having a boy or a girl should be equal. So why do some families have all girls or all boys? Each time a sperm meets an ovum, there is a 50% chance that it will make a boy and a 50% chance that it will make a girl.
What number pair of chromosomes determines gender?
The 23rd pair, the sex chromosomes, differ between males and females. Females have two copies of the X chromosome, while males have one X and one Y chromosome. The 22 autosomes are numbered by size. The other two chromosomes, X and Y, are the sex chromosomes.
What prevents insurance companies from discriminating?
What prevents insurance companies from discriminating against people based on information derived from genetic tests? Discrimination based on genetic information is against the law.
Which piece of DNA would move fastest in gel electrophoresis a segment that is?
When DNA fragments are separated by gel electrophoresis, the longest fragments move fastest.
How do you calculate pedigree?
To start reading a pedigree:
- Determine whether the trait is dominant or recessive. If the trait is dominant, one of the parents must have the trait.
- Determine if the chart shows an autosomal or sex-linked (usually X-linked) trait.
How do you determine gender chances?
For “gender” calculations, the probabilities p and q are equal, both = 1/2 (the equal probabilities of male and female births).
What determines if you have a boy or girl?
It’s all about Dad’s genes A man’s X and a woman’s X combine to become a girl, and a man’s Y combines with a woman’s X to become a boy. But if the sperm don’t have equal Xs and Ys, or if other genetic factors are at play, it can affect the sex ratio.
What determines male or female?
A child’s biological sex (male or female) is determined by the chromosome that the male parent contributes. Males have XY sex chromosomes while females have XX sex chromosomes; the male can contribute the X or Y chromosome, while the female must contribute one of their X chromosomes.