The oxidation of organic compounds by molecular oxygen to produce CO2 and water releases free energy because electrons are being moved from atoms that have a lower affinity for electrons.
28 Alleles
29 Oocyte
30 Spermatocyte
31 X X chromosome
32 X Y chromosome
33 Males are prone to have sex linked disorders
34 Down Syndrome
Cru di chat
35 Family Tree
Answer: Option E - One of the animal’s major body axes would fail to develop normally.
Explanation:
Cytoplasmic determinants help the organs of the embryo to develop.
Hence, absence of cytoplasmic determinants would result in one of the animal’s major body axes failing to develop normally.
The right answer is B
A primary producer corresponds, in an ecosystem, to an autotrophic living being, that is to say capable of producing organic matter from mineral matter. It is the first element of the food chain. This organism is totally or partially ingested by a primary consumer, itself being the potential target of secondary consumers.
Decomposers are living creatures that contribute to the degradation of dead organic matter or feces by returning them in mineral form. They play a crucial role in an ecosystem because they participate in the recycling of the elements.
Answer:
E. 27/64
Explanation:
Knowing that the couple is heterozygous (Aa) for Niemann-Pick disease, they can have children with the following pairs of alleles:
A x A = AA (Dominant homozygous - Unaffected)
A x a = Aa (Heterozygous - Unaffected)
a x A = Aa (Heterozygous - Unaffected)
a x a = aa (Recessive homozygous - Affected)
So each allele pair has a probability of:
AA = 1/4
Aa = 1/4
Aa = 1/4
aa = 1/4
As the disease only affects recessive homozygous individuals (aa), the probability of an unaffected child being born is 3/4.
Since the couple expects to have three children, the probability of neither being born with the disease is obtained by multiplying the probability of each, as follows:
Thus, it is concluded that the probability of none of the children having Niemann-Pick syndrome is 27/64.
