Pea Plants, Yellow is dominant to Green.

Key:
Y: yellow
y: green
What is the homozygous dominant genotype? YY

What is the heterozygous genotype? Yellow pea

What is the homozygous recessive genotype? yy

Cross two heterozygous Pea Plants

Y y
YY
Yy

Yy

yy

What is the genotypic ratio? Yy:yy
What is the phenotypic ratio? 1:1

How many will be green?

2. Cross a homozygous dominant pea plant with a homozygous recessive pea plant.

What is the genotypic ratio?
What is the phenotypic ratio? :

How many will be yellow?

During endocytosis, cells expel what they don't need take in what they need shrink due to loss of water

Nucleic acid certain protein cell membranes certain carbohydrates

Bisphenol a (often called bpa) is a chemical found in products that people use every day, from water bottles to food containers to children's toys. unfortunately, bpa leaches out of its many products and makes its way into our bodies. what are the health effects of bpa exposure? ongoing research is finding that elevated exposure to bpa can affect a wide variety of developmental and physiological processes, but one of the first studies of bpa's health effects came about because of a simple mistake in the lab. at a laboratory at case western reserve university in 1998, geneticist patricia hunt was making a routine check of her female lab mice. as she extracted and examined developing eggs from the ovaries, she began to wonder what had gone wrong. she noticed that many of the eggs showed problems with their chromosomes, and some had irregular amounts of genetic material, which can lead to miscarriages and birth defects in mammals. she learned that a lab assistant had mistakenly washed the plastic mouse cages and water bottles with a harsh soap, releasing bpa from the plastic. knowing that bpa is an endocrine disruptor, a chemical that can enter organisms and mimic hormones, hunt set out to discover whether it had adversely affected her mice.