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3 years ago

The lipid bilayer that forms the core of all cell membranes is composed primarily of

Biology

1 answer:

mr_godi [17]3 years ago

4 0

Answer:

phosophlipids containing a phosophate and 2 fatty acid chains connected by a glycerol molecule.

Explanation:

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In humans there is a dominant allele (A) for the absence of moles; while the recessive allele (a) results in the presence of mol

Art [367]

Answer:

a. $(p + q)^7$ = $p^7q^0+7p^6q+21p^5q^2+35p^4q^3+35p^3q^4+21p^2q^5+7pq^6+p^0q^7$

b. i. 0.75

ii. 0.000061

iii. 0.012

iv. 0.17

c. 0.67

Explanation:

a. The expansion of the binomial (p + q)7 would be such that:

$(p + q)^7$ = $p^7q^0+7p^6q+21p^5q^2+35p^4q^3+35p^3q^4+21p^2q^5+7pq^6+p^0q^7$

b. Both couples are heterozygous:

Aa x Aa

AA Aa Aa aa

Since A is dominant over a,

probability of having mole (aa) = 1/4

probability of not having moles = 3/4

Therefore, the probability of the first child not having moles = 3/4 or 0.75

ii. Let the probability of not having mole = p and the probability of having mole = q. From the binomial expansion:

$(p + q)^7$ = $p^7q^0+7p^6q+21p^5q^2+35p^4q^3+35p^3q^4+21p^2q^5+7pq^6+p^0q^7$

Probability that all of the children will have moles = $p^0q^7$

since p = 3/4 and q = 1/4

$p^0q^7$ = $(3/4)^0(1/4)^7$ = 0.000061

iii. Probability that the first two children will have no moles and the last five will have moles = $21p^2q5$

= $21(3/4)^2(1/4)^5$

= 0.012

iv. Probability that 4 will have no moles and 3 will have moles out of the 7 children = $35p^4q^3$

= $35(3/4)^4(1/4)^3$

= 0.17

c. Probability that the child born without moles is a carrier of the a-allele = probability of heterozygous.

From the cross in (b), the genotypes of those born without moles are AA and 2Aa. Therefore, the probability of not having moles and be Aa is:

= 2/3 or 0.67

8 0

3 years ago

Someone plz help me :(

Pie

Answer:

S. 32 f alsksjhdjduehoeidgdndkdhd

4 0

3 years ago

Describe two ways evolution of organisms can have a harmful effect on humans.

spin [16.1K]

Looks like the question is asking how evolution of a specific species affects humans negatively.
Think of co-evolution examples such as predator-prey and host-parasite relationships.
One example that comes to mind is the use of pesticides in agriculture. It has driven the evolution of resistant insects, requiring the use of harsher chemicals in greater quantity to kill them. This can have a harmful effect on agriculture and in turn affect humans negatively. Does that makes sense?

4 0

4 years ago

How are anole lizards an example of evolution quizlet?

Alekssandra [29.7K]

That's because the anoles are an extraordinary example of convergent evolution—where different living things independently acquire the same adaptations to the same challenges. For example, each island has an anole that lives among twigs.

8 0

3 years ago

The periodic table includes groups of elements that have unique and useful capabilities. Such capabilities are due to the proper

beks73 [17]

Answer:

boiling point is not among them.

but others we've - Electrons affinity

- Electronegativity

- Electropositivity

7 0

3 years ago

Read 2 more answers