3022146
Beschreibung
Quiz von janellenaidoo, aktualisiert more than 1 year ago
|
Erstellt von janellenaidoo
vor mehr als 9 Jahre
|
|
Frage 1
Frage
Which ONE of the following is the best definition of a species?
Antworten
-
A population of similar animals which can interbreed.
-
A population of organisms which can breed to produce fertile offspring.
-
A community of organisms which can interbreed.
-
A population of organisms with similar characteristics.
Frage 2
Frage
What causes the genetic disorder where some males have the sex chromosomes XXY?
Antworten
-
A sex-linked recessive allele.
-
Non-disjunction of chromosomes during meiosis.
-
Two sperm cells fertilise one ovum.
-
Crossing-over during meiosis.
Frage 3
Frage
The chromosome complement of a human individual who inherits an X chromosome from the father, is ...
Antworten
-
44 and XX.
-
44 and XY.
-
46 and XX.
-
46 and XY.
Frage 4
Frage
Which ONE of the following is an example of artificial selection?
Antworten
-
DDT resistance in mosquitoes.
-
The development of different species of tortoise from a common ancestor.
-
The decreasing effect of antibiotics on bacteria.
-
Breeding dairy cattle to increase milk production.
Frage 5
Frage
What percentage of adenine bases is present in a DNA molecule with 2 000 bases, if 400 of the bases are cytosine?
Antworten
-
20%
-
30%
-
40%
-
60%
Frage 6
Frage
Two parents both have blood group A. Their child has blood group O. What is the best explanation for this pattern of inheritance?
Antworten
-
The child has inherited the blood group directly from a grandparent.
-
The parents are homozygous for the blood group alleles.
-
The parents are heterozygous for the blood group alleles.
-
There has been a mutation in the blood group alleles.
Möchten Sie mit GoConqr kostenlos Ihre eigenen Quiz erstellen? eigenen Mehr erfahren.