Ionic bonds involve the gaining and losing of valence electrons between atoms, while covalent bonds involve the sharing of valence electrons between atoms

5 0

3 years ago

Intakes of ______ have been associated with reduced risk for age-related macular degeneration and cataracts.

11Alexandr11 [23.1K]

Answer:

e. both vitamin c and carotenoids

Explanation:

Age-related macular degeneration is an eye related disease which causes our macula to degenerate. It leads to blurred vision which further impacts our abilities like sewing, reading and driving adversely. It can be cured by intake of vitamin C and carotenoids in appropriate amount. Cataract is another disease related to eyes which most commonly occurs in old age people. In this disease, the eye lenses appear cloudy because of the changes in the eye lens tissue. Beta carotene and vitamin C both are very helpful in restricting cataract.

7 0

3 years ago

Read 2 more answers

How many different offspring genotypes are expected in a trihybrid cross between parents heterozygous for all three traits when

aalyn [17]

Answer:

27 genotypes and 8 phenotypes

Explanation:

Supposing that the genotypes of both of the parents are AaBbDd (A, B and D are dominant over a, b and d). After completing the Punnett square, you can predict the following offspring:

I add an image where you can see all the 27 genotypes and frequencies.

Finally, all the 8 phenotypes with the following frequencies:

27/64 A-B-D-

9/64 A-B-dd

9/64 A-bbD-

9/64 aaB-D-

3/64 A-bbdd

3/64 aaB-dd

3/64 aabbD-

<u>1/64 aabbdd </u>

Total 64/64

Note: when a phenotype is A-, it means that it came from either genotype, AA or Aa. The same applies to B- (BB or Bb) and D- (DD or Dd)

3 0

3 years ago