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WorksheetsLife Science 2
Total questions: 16
Worksheet time: 16mins
What do you call the type of reproduction in which the genetic materials from two different cells combine, producing an offspring?
pollination
sexual reproduction
fertilization
asexual reproduction
In _________,_____________ only one parent organism produces offspring.
sexual reproduction
asexual reproduction
pollination process
fertilization process
Mitosis (asexual reproduction) results in genetically _________ offspring.
different
identical
all
What type of cells undergo mitosis?
all body cells
only gametes (sex cells)
Meiosis results in genetically ____________ offspring.
different
identical
all
A human sex cell (such as an egg cell or sperm cell) has just been made in meiosis. How many chromosomes should it have? (hint: a normal human body cell has 46 chromosomes).
11
23
46
48
What are some advantages of asexual reproduction are: (select all that apply - there are 3)
it only requires one organism
it takes less energy than sexual reproduction
offspring are already well-adapted for the environment
there is a lot of genetic variety
Some advantages of sexual reproduction include: (select all that apply - there are 3)
genetic variation
improves chances of adapting to the environment
helps species survive catastrophes
it doesn't take as much energy as asexual reproduction
In people, the Dominant allele (W) codes for a Widow's Peak. The recessive allele (w) codes for no Widow's Peak. What combination of alleles could produce a person without a Widow's Peak?
WW
Ww
ww
In Larkeys, the allele (E) is dominant for red eyes and the allele (e) is recessive for grey eyes. What would be the possible genotype (s) for red eyes?
EE
Ee or ee
EE or Ee
ee
Which explanations support the claim that sexual reproduction leads to variation in a population? CHOOSE ALL THAT APPLY!
Offspring receive genetic information from both parents.
A combination of alleles codes for the different traits of the offspring.
Over generations, the variation in individuals leads to variation in the population.
Mutations are more likely to occur in organisms that undergo sexual reproduction
A person who breeds animals keeps careful records of the fur color of parents and offspring from each generation. The fur color is a trait transferred from generation to generation.
What are the structures that carry the information for these traits called?
organelles
genes
muscles
cytoplasm
A segment of DNA that codes for a trait
gene
centromere
chromosome
chromatid
What are the structures in this image called?
chromosomes
centromere
sister chromatids
chromatin
