Answer:
1/4
Explanation:
Given that the F2 cross produces offspring according to the expected 9:3:3:1 ratio.
YyRr X YyRr:
Let us break the dihybrid cross into individual monohybrid crosses.
Yy X Yy :
Y y
Y YY Yy
y Yy yy
2/4 or 1/2 of the offspring are heterozygous for the trait.
Similarly, in Rr X Rr cross, 1/2 of the offspring are heterozygous for the trait.
Together, 1/2 * 1/2 = 1/4 of F2 plants are expected to be heterozygous for both traits.
All carbohydrates, including sugar, therefore contain the same three elements:carbon<span>, </span>hydrogen<span> and </span>oxygen<span>.</span>
The most important things for a cell<span> are oxygen in order to respire and Glucose, also for respiration. This is used in a process called glycolysis where the </span>cell<span> makes a chemical called ATP which is basically our energy
Hope this helped!</span>
Answer:
thye chromosomes are not visible
Explanation:
DNA, or deoxyribonucleic acid, is a long chain molecule that plays a central role in life on earth. The information encoded in strands of DNA controls the genetic makeup of organisms. The DNA molecule has a backbone of sugars and phosphate groups off of which hang simpler units called nucleotide bases.
