Below is a Punnett square that shows a model of human inheritance
A
А
Аа
Aa
a
a
Аа
Аа
KEY: A = straight hair (dominant); a = curly hair (recessive)
Which of the following must be true about the parent whose
genes are aa?
a
The parent has straight hair
b The parent is dominant
The parent has curly hair
d The parent is capable of having AA offspring

The parent has curly hair.

Explanation:

If AA is the dominant trait for straight hair and aa is the recessive trait for curly hair, then the parent who has aa genes would be curly haired.

emerald ash borer

the emerald ash borer is a green buprestid or jewel beetle native to north-eastern asia that feeds on ash species. females lay eggs in bark crevices on ash trees, and larvae feed underneath the bark of ash trees to emerge as adults in one to two years. hope this !