Answer:
50%
Explanation:
This question involves a gene coding for eye color in humans. The allele for brown eyes (B) are dominant to blue eyes (b). This means that blue-eyed individual will possess genotype: bb.
According to this question, a blue-eyed man (bb) has children with a brown-eyed woman (B_) whose mother has blue eyes (bb). Since the mother of the brown-eyed woman has a blue eye, this means that the woman will be heterozygous for brown eye (Bb).
Hence, the parents in this question will cross as follows: blue eyed man (bb) × brown-eyed woman (Bb). The offspring/children will have the following genotypes (see attached punnet square); Bb, Bb, bb, bb.
Based on the question, 2/4 = 1/2 of the children will be heterozygous for the eye color trait. That is, ½ × 100 = 50%.
Answer:
A negatively charged atom is called an anion. This just means it has gained electrons (negative charges) and the atom has become negative instead of neutral since number of protons = number of electrons. Now it has 1 or more extra electrons, it is more negative than positive or neutral.
mechanical advantage is the number of times that a machine increases an input force
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Answer: Resemble structures formed by bacterial colonies found today in some shallow marine bays
Explanation:
Stromatolites are laminated accretionary structures that have synoptic relief (i.e., they stick up above the seafloor). They grow in extremely salty shallow lagoons or bays. Stromatolites building community includes the oldest known fossils.
They are formed by bacteria such as cyanobacteria.
This is why they resemble structures formed by bacterial colonies found today in some shallow marine bays.
Blood diffuse is translated into red blood cells