9118633
Beschreibung
Frage 1
Frage
Which parents determines the sex of the offspring?
Antworten
-
Mother
-
Father
Frage 2
Frage
A male fruit fly is white eyed, which is recessive, and an X-linked gene. What term would we use to describe its genotype?
Antworten
-
Homozygous recessive
-
Heterozygous recessive
-
Hemizygous recessive
Frage 3
Frage
A male fruit fly carries an X chromosome with a white eyed allele, and is mated with a female homozygous for red eye alleles. Which statement would be true?
Antworten
-
All offspring will have white eyes.
-
All male offspring will have white eyes.
-
All daughters will be heterozygotes.
Frage 4
Frage
A colour blind male mates with a homozygous non colourblind female. Which statements are true?
Antworten
-
All sons are colourblind.
-
None of the sons will be colourblind.
-
All daughters will be carriers.
-
There is a 50% chance one of the children will be colourblind.
-
If one of the daughters has offspring with a non-colourblind male, there is a 50% chance that their son will be colourblind.
Frage 5
Frage
You perform a dihybrid cross between a heterozygote and a homozygous recessive individual. Instead of the expected 1:1:1:1 ratio, the parental types are far more common and only a small ratio of the offspring are recombinants. What can you conclude and why?
Antworten
-
The genes did not assort independently because they are linked on the same chromosome.
-
The genes did not assort independently because there was a failure to separate during anaphase I.
-
The genes being tested for actually do not segregate and are alleles.
Frage 6
Frage
Theoretically meiosis should cause all [blank_start]gametes[blank_end] to have the [blank_start]parental[blank_end] type if genes being observed are [blank_start]linked[blank_end].
Antworten
-
gametes
-
parental
-
linked
Frage 7
Frage
Which statement best describes recombinant frequency?
Antworten
-
The number of times recombination occurs during meiosis.
-
The proportion of recombinant gametes that are produced.
-
The number of recombinant individuals in a population.
Frage 8
Frage
The larger the distance between two genes the less likely a chiasmata will be formed between them.
Antworten
- True
- False
Frage 9
Frage
A small recombinant frequency indicates a small distance between genes.
Antworten
- True
- False
Frage 10
Frage
What is the maximum recombination frequency?
Antworten
-
100%
-
50%
-
49.9%
Frage 11
Frage
Choose the correct statements about genetic map units.
Antworten
-
They are arbitrary.
-
They are also known as cM, centimacrometres.
-
They are also known as cM, centimorgans.
-
The number of map units can be calculated by multiplying the recombinant frequency by 100.
-
The number of map units can be calculated by dividing the recombinant frequency by 100.
Möchten Sie mit GoConqr kostenlos Ihre eigenen Quiz erstellen? eigenen Mehr erfahren.