# Biology

posted by .

how do chromosomes determine sex

a family has four children, two girls, and two boys. one girl and one boy are color blind. are their parents color blind

name at least three traits that are a results of polygenic inheritance
weight, eye clor, height (right)

what possible genotypes will te offspring have if the parents blood types are O and AB

a foal from a red colored mother and a white colored fatherhas a light red coat. what are the likely genetics behind the foals coloration. what makes you think this

how many crosses of red and white four-o-clock flowers would you need to find out all of the possible phenotypes for color of flowers

i need any help whatsoever. i don't expect you to answer these for me, but i will appreciate any and all help. thanks. -xxfangg.rockrrxx

• Biology -

XX = female and XY = male

Children receive on sex chromosome from each parent. Colorblindness is a recessive trait on the X chromosome. Try a Punnett Square.

Right with the three traits.

Use Punnett square for OO and AB parent genotypes.

The foal is neither colored like the father or mother, but somewhere in between. Hmmmm, what could that mean?

Are the flower colors dominant or recessive?

I hope this helps.

• Biology -

A foal from a red colored mother and a white colored father, has a light red coat. What are the likely genetics behind the foalâ€™s coloration. What makes you think this?

## Similar Questions

1. ### life science

ok i really need help. like really bad. cant figure it out. ok here it is. a color blind man marries a woman with normal vision. of their three daughters, one is color blind. one of their two sons is also colorblind. what are the genotypes …
2. ### Math

In a family with two children, what are the probabilities of the following outcomes, assuming that the birth of boys and girls is equally likely?
3. ### math

in a family with two children, what are the probabilities of two boys, the first is a girl the second is a boy, neither is a girl, at least one girl, assuming that the birth of boys and girls is equally likely.

Write a pedigree in which there are parents and 4 children, 1 girl and 1 boy are color blind and the other girl and boy are not. I HAVE A FEW QUESTIONS- ?
5. ### biology help

color blindness is a sex linked disorder caused by recessive allele on the X chromosome. XC= normal vision. Xc= color blind. if a normal vision man marries a color blind woman, what are the chances that they will have a color blind …
6. ### Biology

The gene for color blindness in humans is found on the X chromosome. A boy has a color-blind father. Will the boy be color blind?
7. ### statistics

3. A couple is planning on having four children. Assume that the probabilities of the man fathering a boy or a girl are .50 and .50, respectively. What is the probability that a. exactly two will be boys, b. fewer than two will be …