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

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.

http://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8

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.

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

I'm here to help! Let's go through your questions one by one:

1. How do chromosomes determine sex?
Chromosomes determine the sex of an individual through the presence of sex chromosomes. In humans, females have two X chromosomes (XX) and males have one X and one Y chromosome (XY). The presence or absence of the Y chromosome ultimately determines the development of male characteristics.

2. Are the parents color blind if one girl and one boy out of four children are color blind?
It is possible for the parents to be carriers of the color blindness trait even if they are not color blind themselves. Color blindness is a recessive trait carried on the X chromosome. If both parents are carriers, there is a chance that their children could inherit the trait, even if the parents do not exhibit it.

3. Name at least three traits that are a result of polygenic inheritance.
Polygenic inheritance refers to the inheritance of traits controlled by multiple genes. Some examples of traits that are influenced by multiple genes include:
- Height
- Skin color
- Intelligence
- Hair color
- Eye color

4. What possible genotypes will the offspring have if the parents' blood types are O and AB?
If one parent has blood type O and the other has AB, the possible genotypes for their offspring could be AO or BO. There is a 50% chance that the offspring will have blood type A, and a 50% chance they will have blood type B.

5. What are the likely genetics behind the foal's coat coloration if the mother is red and the father is white, and the foal has a light red coat?
The foal's coat color is likely a result of incomplete dominance or a blend of the parents' coat colors. In this case, the red coat color is dominant, while white coat color is recessive. Therefore, if the parents' coat colors are mixed, it can result in a foal with a light red coat.

6. How many crosses of red and white four-o'clock flowers would you need to find out all of the possible phenotypes for flower color?
To find out all the possible phenotypes for flower color, you would need to perform multiple crosses. In this case, since red and white are the two possible flower colors, you would need to perform at least four crosses: red x red, red x white, white x red, and white x white. These crosses will help determine the inheritance patterns and the resulting phenotypes.

I hope this helps! If you have any more questions, feel free to ask.

Sure! I'd be happy to help explain how to approach these questions. Here's how you can find the answers:

1. How do chromosomes determine sex?
To understand how chromosomes determine sex, you need to know that humans have 23 pairs of chromosomes, with one pair called the sex chromosomes. Females have two copies of the X chromosome (XX), while males have one X and one Y chromosome (XY). The presence of the Y chromosome in males determines their sex. To explain this to someone, you can mention the concept of sex determination by chromosomes and provide this information.

2. Are the parents color blind if one girl and one boy from the same family are color blind?
To determine if the parents are color blind, you need to understand the inheritance pattern of color blindness. Color blindness is a recessive trait that is usually carried on the X chromosome. If a female is color blind, she must have received the color blindness allele from both parents (since females have two X chromosomes). If a male is color blind, he only needed to receive the color blindness allele from his mother (since his father provides the Y chromosome). So, in this case, we can't determine if the parents are color blind based on the information provided.

3. Name at least three traits that are a result of polygenic inheritance.
Polygenic inheritance occurs when multiple genes contribute to the expression of a trait. Some examples of traits that are influenced by multiple genes include height, skin color, eye color, hair color, and intelligence. You mentioned weight, eye color, and height, which are correct examples.

4. What possible genotypes will the offspring have if the parents' blood types are O and AB?
To determine the possible genotypes of the offspring, you need to understand the inheritance patterns of blood types. The ABO blood types are determined by three alleles: A, B, and O. The O allele is recessive, while both A and B alleles are dominant. The possible genotypes for the parents in this case would be AO (O from one parent and A from the other) and AB (A from one parent and B from the other). Their offspring could have the genotypes AO, AA, BO, AB.

5. What are the likely genetics behind the foal's coloration of light red coat, given a red-colored mother and a white-colored father?
To understand the likely genetics behind the foal's coloration, you need to know about the inheritance of coat color in horses. In this scenario, red is likely a dominant allele, while white is a recessive allele. The light red color of the foal suggests that it inherited one red allele from the mother and one white allele from the father. This combination leads to a lighter shade of red.

6. How many crosses of red and white four-o'clock flowers would you need to find out all of the possible phenotypes for flower color?
To determine all possible phenotypes for flower color, you need to know the inheritance pattern of flower color in four-o'clock plants. If the flower color is determined by a single gene with two alleles (red and white), you would need to perform two crosses to see all possible phenotypes. One cross would involve a red-flowered plant with a white-flowered plant, and the other cross would involve the reverse combination. By examining the offspring from these crosses, you can determine if there are any additional combinations or variations.

I hope these explanations help! If you have any more questions or need further assistance, feel free to ask.